Sam signed a two-year deal with the Alouettes last week.
"I'm not trying to really do anything historic here by being with Montreal, I'm just trying to help the team win some games so we can bring the Grey Cup back home,'' Sam said at packed news conference Tuesday.
The 25-year-old Sam came out publicly before last year's NFL draft. He was selected in the seventh round by the St. Louis Rams to become the first openly gay player chosen by an NFL team.
The Rams cut him in training camp. The Dallas Cowboys signed him to their practice squad but released him in October.
Sam starred at Missouri in college, earning SEC Defensive Player of the Year honors in 2013.
Alouettes general manager Jim Popp, who called Sam a "trailblazing athlete,'' said he believes the 6-foot-2, 260-pound player can excel as a pass-rusher in the CFL.
"My size fits as a pass-rusher,'' Sam said. "I led my team in preseason in sacks and that was in the NFL, so I'm a pass-rusher. Doesn't matter where I'm at.''
Sam was considered by NFL teams to be a "tweener,'' not quite the right body type to be a defensive end or an outside linebacker for that league.
But Popp believes Sam can follow a path similar to Cameron Wake, who was converted from linebacker to end when he joined the B.C. Lions in 2007. Wake was the CFL Defensive Player of the Year in each of his two seasons before signing with the Miami Dolphins, where he has had a successful NFL career.
Sam said he became comfortable with his sexual orientation in his senior year in college and told his coach and teammates. He came out publicly on Feb. 9, 2014.
"There was a reason why I came out to my team, because I didn't want to live a life behind the closet anymore,'' he said. "Eventually it was going to come out anyway, so I have no regrets. I'm happy with myself. I'm living my life the way I want to live.''
After he came out, Sam's NFL jersey was an instant best-seller. The Alouettes already put his No. 94 jersey on sale on their website.
While Sam wants to be seen as just another football player, he knows his decision to reveal his sexuality comes with a certain responsibility.
"I've set in motion a lot of stuff,'' he said. "I have a responsibility to handle myself the right way and carry myself the right way so future athletes who may be straight, gay, bisexual, whatever, they can be inspired just by what I'm doing.''
Michael Sam on fresh start in CFL
After signing a two-year contract with the Montreal last week, DE Michael Sam was introduced as the newest member of the Alouettes on Tuesday.