Edward and Karen Zuckerberg, a dentist and a psychiatrist respectively, raised four children: Randi, Donna, Arielle, and, of course, Mark, in Dobbs Ferry, New York. A precocious child, Mark created a messaging program called "Zucknet" using Atari BASIC at age 12. As a kid he also coded computer games for his friends.
Source: Bio.
While attending high school at the renowned Phillips Exeter Academy in New Hampshire, he built an early music streaming platform, which both AOL and Microsoft showed interest in. Still a teen, he rejected offers for an acquisition or a job.
Source: Bio.
He wasn't just a computer nerd though. Zuck loved the classics — "The Odyssey" and the like — and he became captain of his high school fencing team.
Source: The New Yorker
Soon after Zuckerberg started at Harvard University in 2002, he earned a reputation as a skilled developer. He started "The Facebook" with several friends out of his dorm room and dropped out of school after his sophomore year to focus on it full-time.
Source: Bio.
Before dropping out, Zuckerberg met his now-wife, Priscilla Chan. Chan told "Today's" Savannah Guthrie that they met at a frat party. "On our first date, he told me that he'd rather go on a date with me than finish his take-home midterm," she said.
Source: Today
The company raised its Series A — $12.7 million — when Zuckerberg was barely legal drinking age. The rest is history. In 2010 he was named Time Magazine's "Person of the Year."
Source: Bio.
Not many tech CEOs get to see themselves immortalized on the big screen, but in 2010, "The Social Network" put a dramatized version of Facebook's founding story in theaters. It earned eight Academy Award nominations but Zuckerberg strongly maintains that many of its details are incorrect.
Source: Bio.
Aaron Sorkin directed "The Social Network." Zuck may have hated the movie, but Sorkin's hit TV show "The West Wing," is one of his favorites.
Source: The New Yorker
Zuckerberg took the company public on May 18, 2012. The IPO raised $16 billion, making it the biggest tech IPO in history until Alibaba won the spot late last year.
Source: Business Insider
Chan and Zuckerberg continued to date throughout Facebook's rise to greatness and the lovebirds finally got married the day after the company went public. The relatively low-key event was actually a "surprise" wedding: Guests thought they were celebrating a med school graduation party for Chan. They tied the knot at their Palo Alto home.
Source: Business Insider and San Jose Mercury News
Green Day's Billie Joe Armstrong performed and Mark designed Priscilla's ruby ring himself.
Source: Business Insider and San Jose Mercury News
The two honeymooned in Italy, flying in on a private jet and staying at a five-star hotel, Portrait Suites, where rooms start at €800 per night. But paparazzi also spotted the couple eating in McDonald's while overseas.
Sources: Business Insider and Business Insider
The couple tends to set aside two weeks every December to travel, sometimes visiting Chan's family in China.
Sources: Business Insider
Zuckerberg studies Chinese, and his Mandarin was so good by fall 2014 that he managed to hold a 30-minute Q&A in the language.
Source: Business Insider
They have an adorable Hungarian sheepdog named Beast who looks like a tail-wagging mop and even has his own Facebook page.
(Check out Zuck's Instagram and Beast's Facebook page for more ridiculous pictures.)
Occasionally selling Facebook stock keeps Zuckerberg so rich he doesn't need a salary: The CEO makes $1 a year. He did, however, require $610,454 in 2014 for catered, privately chartered jets for himself and his guests.
Source: SEC
And he's far from flashy with his wealth. "He’s the poorest rich person I’ve ever seen in my life," Tyler Winklevoss once said of Zuckerberg in an interview.
Source: The New Yorker
Instead of a Tesla or a Ferrari, Mark Zuckerberg drives a black Volkswagen GTI with a manual transmission, which costs around $30,415.
Source: Business Insider
In October 2014, he shelled out $100 million for 750 acres of secluded land on Hawaiian island Kauai. He's using the land to build a private getaway.
Source: Business Insider
In Palo Alto, Zuckerberg spent more than $45 million buying his 5,000-square-foot home and then all the other land and buildings around it.
Source: Business Insider, San Jose Mercury News
He also bought a $10 million mansion in San Francisco, and then proceeded to spend more than $1 million on remodeling and additions (like a $60,000 greenhouse).
Source: SF Gate
During the renovation, he allegedly hired people to sit in cars parked near the house at night to save parking spaces for the construction workers.
Source: CBS San Francisco
Besides privacy, Zuckerberg spends his money on trying to make the world a better place. He donated $992 million to the Silicon Valley Community Foundation in 2013 and $75 million to San Francisco General Hospital in 2014.
Sources: The Verge and Business Insider
Zuck's been much looser with Facebook's money than his own, though: The company has some major acquisitions under its belt, including $1 billion for Instagram, $19 billion for WhatsApp, and $2 billion for Oculus.
But even Zuckerberg can't always get what he wants: He tried to buy Snapchat for $3 billion in 2013, but CEO Evan Spiegel turned him down.
Source: The Wall Street Journal
Besides other tech celebrities, Zuck frequently meets with other important people like Brazil's president, Dilma Rousseff...
Source: Facebook
In Singapore, artist Zhu Jia dedicated an exhibition to him called "The Face of Facebook."
Source: Reuters
Slightly less glamorous: Earlier this year an New York graffiti artist debuted a Zuckerberg portrait made of feces.
Source: Business Insider
At 31, Zuckerberg is one of a very small, elite group who has more billions of dollars than he has years on earth.
Source: Business Insider