People pause at the memorial site in Copley Square on April 30 in Boston. The city continues to return to normalcy with Boylston Street fully reopened and businesses back up and running after two weeks of closures. See all photography related to the Boston bombings.
(CNN) -- Patriots Day is the third Monday in April marking the anniversary of the first battles of the American Revolutionary War. It is also the date for the Boston Marathon every year. It is meant to be a joyful celebration for the city, but yesterday that all changed.
Tragedy struck and lives were changed forever after two bombs exploded near the finish line of the marathon. Instead of celebrating the city, a nation now mourns the loss of three and the injuries of more than 100. But true to the American spirit, there are people and organizations on the ground helping the victims, and you can join their efforts.
One Fund Boston
Runner, 78, blown off his feet by blast
Finish line becomes like war zone
Celebrity Bostonians react to bombings
Massachusetts Governor Deval Patrick and Boston's Mayor Tom Menino,along with the city, have established the 'One Fund Boston'. "At times like this we are one state, one city and once people," Governor Patrick said. The fund has already raised over $23 million, which will go towards victims and their families most affected by the bombings.
Donate to Onefundboston.org
FBI victims assistance center
The FBI assistance center is activated for anyone who was injured or who witnessed the Boston bombings
The Red Cross.
The Red Cross is on the ground and has mobilized mental health volunteers to support those affected, as well as opening family assistance centers. They are offering 24/7 free mental health support - if you want to access this, contact the SAMHSA Disaster Distress Helpline at 1-800-985-5990 or text 'TalkWithUs' to 66746.
The Red Cross recommends people download their First Aid app which provides information on how to help in emergency situations. The Red Cross also has valuable information about dealing with an emotional crises
Donate to or volunteer with the American Red Cross
Give blood
There may be a for blood on a sustained basis. Anyone wishing to give blood should keep checking with local hospitals and organizations like the Red Cross in the near future to see where the need may be and where to donate.
The Salvation Army
The Salvation Army has established a specific fund for the victims in Boston and you can donate to it here.
Boston Children's Hospital
Ten of the victims were taken to Boston's Children's Hospital. The hospital is updating its website with news as it becomes available. Follow @BostonChildrens on Twitter for updates.
The Children's Hospital website also has useful resources for guidance on how to talk to children after a tragedy.
Donate to Boston's Children's Hospital
Adidas Boston Tribute Tee
Adidas has designed a T shirt commending all the Boston first responders, the Boston Athletic Association and all volunteers for their reaction to the events surrounding the bombings. 100% of proceeds from sales of the T shirts will go to the OnefundBoston.org
Buy an Adidas Boston Tribute Tee
B Strong hat
Major League Baseball, the Major League Baseball Players Association and the Boston Red Sox have all joined up to donate a combined $600,000 to victims of the marathon bombing and their families. The Red Sox and MLB will also donate 100% of the proceeds from the sale of 'B Strong' hats with the Red Sox letter 'B', to The One Fund, created by Mayor Menino.
Boston Marathon Relief Fund
Semper Fi fund has created a Boston Marathon relief fund. Donations raised will go to help those injured in the bombing and hospital staff."To donate, please go to the Americas Fund website and select Boston Marathon Relief fund from the drop-down menu.
Donate to the Boston Marathon Relief Fund
Richard Family Fund
The Richard Family Fund has been established to help the family of 8 year old Martin Richard, who died in the bombings. Martin's mother and sister were also badly injured. Funds will help with the family's medical expenses and recovery.
Donate to the Richard Family Fund
Sean Collier Memorial Fund
MIT has created a memorial fund in honor of slain campus police office Sean Collier.
Donate to the Sean Collier Memorial Fund
Celeste and Sydney Corcoran Recovery Fund
Celeste and Sydney Corcoran were both badly injured in the blasts. Sydney sustained severe shrapnel injuries and Celeste has had both legs amputated below the knee. Anyone wishing to help the family with the financial burden of this tragedy can donate to a fund in their name.
Donate to the Celeste and Sydney Recovery Fund
White Family Fund
3 members of the White family sustained serious injuries in the explosions, and one family member has lost a limb. A fund has been set up through the website 'Youcaring.com' to help the family with recovery and rehabilitation.
Donate to the White family fund
Jeff Bauman Fund
Waiting to cheer his girlfriend across the finish line, Jeff Bauman was caught in the explosion and suffered the loss of both legs, severe burns and vision damage. A fund has been set up to help Jeff at 'Youcaring.com'.
Donate to the Jeff Bauman Fund
Patrick Downes and Jessica Kensky fund
Newlywed couple Patrick Downes and Jessica Kensky each lost a leg in the Boston blasts. A fund has been set up to help with their recovery, rehabilitation and prosthetics through Giveforward.com
Donate to the Patrick Downes and Jessica Kensky fund
Adrianne Haslet-Davis Fund
Dancer Adrianne Haslet-Davis and her husband Adam were both caught up in the bombing. Adrianne lost her left foot. A fund has been established to help Adrianne's recovery.
Donate to the Adrianne Haslet-Davis fund
Nicole and Michael Gross, Erika Brannock Fund
The 'Be Strong Stay Strong' fund has been set up to help Nicole and Michael Gross, along with Nicole's sister Erika - all severely injured by the bombs as they stood near the finish line at the Boston marathon.
Donate to the Be Strong Stay Strong fund
Lu Lingzi Scholarship Fund
Trustees at Boston University have created a scholarship fund in the name of Lu Lingzi, the Chinese graduate student there who tragically died in the attacks. You can donate to the fund and also post messages of support to her family on the dedicated website.
Utilize social media
People often turn to Twitter for quick ways to connect. If you are in the Boston area and are looking for organizations seeking volunteers, or if you are far away but want to keep up with ways o help, follow the hashtag #BostonHelp on Twitter.
You also can keep up with us @CNNImpact or Impact Your World on Facebook as well as on our website.
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Running shoes are among the mementos left as a tribute to the victims of the bombing.
Boston shows its resilience and heart with signs of support for the marathon bombing victims, including this cover from the new issue of Boston magazine.
Law enforcement officials enter St. Patrick's Church in formation prior to the funeral for Massachusetts Institute of Technology Police Officer Sean Collier in Stoneham, Massachusetts, on Tuesday, April 23. Collier was allegedly shot and killed by Boston Marathon bombing suspects Dzhokhar and Tamerlan Tsarnaev on Friday, April 19.
Members of many different law enforcement agencies walk in formation into Collier's funeral at St. Patrick's Church on April 23.
President Barack Obama observes a moment of silence in honor of the victims of the Boston Marathon bombings, in the Oval Office in Washington on Monday, April 22. Massachusetts Gov. Deval Patrick asked his state and beyond to honor the victims at 2:50 p.m., the time of the first explosion.
Staff of the Beth Israel Deaconess Medical Center Emergency Department gather inside a trauma room on April 22, to observe a moment of silence for victims in the Boston Marathon bombings.
Onlookers at a building near the finish line during a moment of silence on April 22.
A Buddhist at a memorial during a moment of silence near the finish line of the Boston Marathon on April 22.
One week after the Boston Marathon bombings, people gather to observe a moment of silence in the city's Copley Square on April 22.
Officials line Boylston Street near the site of the explosions as they observe a moment of silence on April 22.
People take part in the moment of silence near the marathon finish line.
State employees pause for a moment of silence on the steps of the Massachusetts State House.
Traders on the floor at the New York Stock Exchange join the moment of silence on April 22.
Pallbearers carry the casket of victim Krystle Campbell from St. Joseph Catholic Church after a funeral service on April 22 in Medford, Massachusetts.
Mourners walk out of St. Joseph Catholic Church after Krystle Campbell's funeral service.
Nurse practitioner Maureen Quaranto, who treated victims of the Boston Marathon bombings, wears her Boston Marathon jacket during Mass at the Cathedral of the Holy Cross on Sunday, April 21, in Boston.
From left, Boston Police Department Superintendents Kevin Buckley and William Evans attend the Mass at the Cathedral of the Holy Cross with Police Commissioner Edward Davis on April 21.
Photos of the deceased are displayed at the Cathedral of the Holy Cross on April 21, the first Sunday since the Boston Marathon bombings.
Boston Police Department Superintendent William Evans, right, kneels during the service at the Cathedral of the Holy Cross on April 21.
Parishioners gathered for a morning service at the Redeemer Fellowship Church on April 21, just a few blocks from the crime scene on Franklin Street where major police activity occurred on April 19 during the manhunt for Dzhokhar Tsarnaev, in Watertown, Massachusetts.
Leaders of an interfaith service participated in a vigil at the memorial for the victims of the Boston Marathon bombings, near the finish line on Boylston Street in Boston on April 21.
Crowds gathered to participate in an interfaith memorial service with leaders from six churches at a makeshift memorial for victims near the site of the Boston Marathon bombings at the intersection of Boylston and Berkeley streets on April 21.
The makeshift memorial honoring the victims of the Boston Marathon explosions on Boylston Street continues to grow as onlookers gather on April 21.
Nicole Collier Lynch, center, sister of slain MIT police officer Sean Collier, hugs a Wellesley police officer during a vigil at the Town Common in Wilmington, Massachusetts, on Saturday, April 20. Collier, 26, was shot multiple times in his car on Thursday night as Boston Marathon bombing suspects Dzhokhar Tsarnaev and his brother Tamerlan tried to evade capture.
A woman holds an American flag at a makeshift memorial on April 20, near the scene of the Boston Marathon explosions.
People gather at a makeshift memorial for victims on April 20.
A flag decorates the memorial on Boylston Street in Boston on April 20.
Watertown residents gather to attend a candlelight vigil at Victory Park on April 20.
A boy visits a makeshift memorial on Boylston Street in Boston on April 20.
A man looks out onto Boylston Street on April 20.
Items hang from a barrier Saturday at the makeshift memorial near the site of the Boston Marathon bombings.
Huntsville, Alabama, residents hold a prayer vigil on Friday, April 19, for those lost and injured in the bombing at the Boston Marathon. Three people died when two bombs went off Monday, April 15, near the finish line. 
A man rings a bell at the vigil in Huntsville on April 19.
Two women embrace during a candlelight vigil in Somerville, Massachusetts, for the victims of the Boston Marathon bombing on Thursday, April 18.
People hold candles as they listen to a speaker during a vigil in Somerville, Massachusetts, on April 18.
President Barack Obama talks with Massachusetts General Hospital staff on April 18 while visiting patients injured in the terror attack.
A man at the BoMA restaurant across the street from the Cathedral of the Holy Cross in Boston watches President Obama speak on television at the cathedral honoring the victims of the Boston Marathon bombings on April 18.
People watch President Obama at Cathedral High School in Boston on April 18.
A running shoe and U.S. flag are part of a memorial on the Boston Marathon route on April 18.
President Barack Obama and first lady Michelle Obama arrive at the interfaith service for the victims of the Boston Marathon bombing, at the Cathedral of the Holy Cross in Boston, on April 18.
Mourners filled the cathedral in Boston on April 18 for the the interfaith service.
President Barack Obama, Michelle Obama and Massachusetts Gov. Deval Patrick attend the interfaith prayer service on April 18.
People gather outside of the Cathedral of the Holy Cross.
A nun hugs a woman at the interfaith prayer service.
A flag flies at half staff on April 17 near the scene of the Boston Marathon bombings.
First lady Michelle Obama takes part in a moment of silence for victims of the bombings at the Boston Marathon during a bill-signing ceremony at the Maryland State House in Annapolis, Maryland, on April 17.
Flowers, running shoes and other items are left in memory of Chinese graduate student Lingzi Lu, who was killed during the bomb explosions on April 17.
Joy Liu, 23, puts a green hat with a shamrock and a note with the words "From Boston and Beijing with love. RIP" at the memorial for Lu.
Boston Bruins fans sing the national anthem during pregame ceremonies on April 17 in remembrance of the Boston Marathon bombing victims.
Brooks Orpik of the Pittsburgh Penguins shows his support for Boston with a sticker on his helmet during the Penguins' game against the Montreal Canadiens on April 17.
A moment of silence was held for the victims of the Boston Marathon bombings before a hockey game between the Boston Bruins and the Buffalo Sabres on April 17.
People pray during a vigil held by the city of Cambridge, Massachusetts, on April 17 to show support for those affected by the Boston Marathon bombings.
Dennis Seidenberg of the Boston Bruins observes a moment of silence for the victims of the Boston Marathon bombings before the start of an NHL hockey game in Boston against the Buffalo Sabres on Wednesday, April 17. It was the first sporting event held in the city since the bombings.
A man places a message for the victims of the Boston bombings at a memorial site in Boston on April 17.
Prior to an April 17 service at Marsh Chapel on the Boston University campus, members of the clergy walk past a memorial for graduate student 
Danielle Cerroni writes a chalk message on the street on April 17 at the scene of the explosions near the finish line of the Boston Marathon.
Homeland Security Secretary Janet Napolitano observes a moment of silence for victims of the Boston bombing during a hearing before the Senate Homeland Security and Governmental Affairs Committee on April 17.
A woman looks at memorials left at the scene of the Boston Marathon explosions.
A man and woman leave after visiting the makeshift memorial on Boylston Street on April 17.
A mother and daughter hold one another during a vigil in memory of 8-year-old Martin Richard of Dorchester at Garvey Park in Boston on Tuesday, April 16.
A crowd holding candles gathers during a vigil on April 16 at Garvey Park in Boston for 8-year-old Martin Richard of Dorchester, who was killed in the marathon bombing.
People gather in Boston Common on April 16 for a candlelight vigil for victims of the bombings in Boston.
Hundreds gather at the impromptu vigil on Boston Common.
Emerson College students embrace one another at the vigil on Boston Common on April 16.
Attendees hold candles in honor of the victims at an interfaith service at Arlington Street Church in Boston on April 16.
A woman uses her hand to keep wind from her candle as she stands with others around the pond in the Boston Public Gardens after a candlelight interfaith service at Arlington Street Church on April 16.
Mourners gather on the edge of the pond in the Boston Public Gardens for a candlelight vigil on April 16.
Visitors fill Arlington Street Church for a candlelight vigil on April 16.
Students from the Clifden Academy hold an American flag and candles during a vigil on April 16 in Dorcester, Massachusetts, in honor of 8-year-old Martin Richard, who was killed in the bombings.
People walk along the barricade at Boylston Street on April 16, following yesterday's bomb attack on the Boston Marathon.
On the shared porch of their home in Medford, Massachusetts, on April 16, Colleen Howe, left, and Lisa O'Leary grieve for their neighbor, Patty Campbell, who lost her daughter Krystle Campbell in the bombings.
Nicole Rand, left, who ran the marathon, embraces with her mother, Maureen Joham, on April 16 as she recounts her experience in Boston.
Attendees of the vigil sign a large poster in honor of the victims of the bombing on April 16.
Mourners hug one another during a vigil for victims of the Boston Marathon bombings at Boston Common
A man carries balloons, flowers and flags to a memorial for victims on April 16, just blocks from the scene of the bombings.
American flags hang from a barrier on April 16 at a roadblock staffed by National Guard soldiers at the end of Boylston Street near the site of the bombings in Boston.
Mike Vitale, who lives in the Boston area, prays beside a makeshift memorial at a roadblock at the end of Boylston Street.
Emerson College students Rachel Ferullo, left, and Kathryn Waxman at a vigil on Boston Common for victims of the bombings.
Runners Judy Adler, left, and her daughter, Rachel Schapiro, embrace during a moment of silence at the Baptist Health South Florida Brickell Run Club event organized on April 16 in Miami in honor of victims of the Boston Marathon bombings.
Five-time Boston Marathon runner Jose Sotolongo, center, reacts during a moment of silence at the Baptist Health South Florida Brickell Run Club event in Miami on April 16.
The New York Islanders and Florida Panthers stand for a moment of silence for the bombings at the Boston Marathon before their game at Nassau Veterans Memorial Coliseum on April 16 in Uniondale, New York.
Members of the Boston Red Sox observe a moment of silence before their game against the Cleveland Indians on April 16 in Cleveland.
People walk Boylston Street where memorials have been set up to the corner of Berkeley after the barricades were moved back on April 16.
A woman prays at a security gate near the scene of the bomb attack where visitors have congregated on April 16. 
From left, Boston Marathon runners Tammy Snyder, Diane Deigmann and Lisa Kresky-Griffin embrace at the barricaded entrance to Boylston Street near the finish line of the Boston Marathon on April 16.
Two young girls leave flowers on the steps outside the home of 8-year-old Martin Richards, who was killed in one of the explosions at the marathon.
Several former Heisman Trophy winners, including former Saints running back George Rogers, right, observe a moment of silence for the bombing victims Tuesday before working on a Habitat for Humanity home in New Orleans.
Traders observe a moment of silence on Tuesday before the opening bell on the floor of the New York Stock Exchange.
The flag above the White House flies at half staff on Tuesday, April 16 in Washington.
The Minnesota Twins stand during the national anthem before their game on Monday, April 15, in Minneapolis, following a moment of silence to honor the victims of the Boston Marathon bombings.
President Barack Obama makes a statement about the bombings in the White House briefing room on Monday.
Players and fans observe a moment of silence before the San Antonio Spurs and Golden State Warriors NBA game in Oakland, California, on Monday.
A U.S. flag flies at half staff at the Capitol on Monday after House Speaker John Boehner ordered flags to be lowered.
Fans pause for a moment of silence before the NHL game between the Phoenix Coyotes and the San Jose Sharks on Monday in Glendale, Arizona. 
Mark Trumbo of the Los Angeles Angels of Anaheim stands during the National Anthem following a moment of silence to honor the victims of the Boston Marathon bombing before the game against the Minnesota Twins on April 15, 2013 in Minneapolis, Minnesota. 
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