Short answers, pulled from the story.
Chris Hadfield's first spaceflight was STS-74 in November 1995, aboard Space Shuttle Atlantis. It was NASA's second shuttle mission to dock with the Russian space station Mir, and Hadfield became the first Canadian to operate the Canadarm in orbit.
Yes. Hadfield became the first Canadian to perform a spacewalk during STS-100 in April 2001. He completed two spacewalks totalling 14 hours and 50 minutes while helping install Canadarm2 on the International Space Station.
Hadfield's modified rendition of David Bowie's Space Oddity, recorded aboard the ISS and released on the 12th of May 2013, has over 56 million views on YouTube. The video was filmed just before he returned to Earth after commanding Expedition 35.
Hadfield announced his retirement from the Canadian Space Agency in June 2013, one month after returning from his third spaceflight. His retirement was effective the 3rd of July 2013, capping a 35-year career as a military pilot and astronaut.
Hadfield's 2013 autobiography, An Astronaut's Guide to Life on Earth: What Going to Space Taught Me About Ingenuity, Determination, and Being Prepared for Anything, became a New York Times bestseller and the bestselling book in Canada on a Canadian subject. In 2021 he also published a Cold War thriller called The Apollo Murders.
Hadfield was inspired at age nine when he watched the Apollo 11 Moon landing on television while growing up on a corn farm in southern Ontario. He has cited that 1969 broadcast as the moment his ambition to become an astronaut began.