Aloha and welcome aboard!
It's good to have you here. My advice is to pay attention to the rules of your marina and be good neighbors with the folks near you in the slip. Try very hard not to ram anyone when going and coming and use lots of fenders. In the U.S. the Coast Guard Auxiliary offers basic boating courses as does the U. S. Power Squadron but I'm not certain if there is a Canadian equivalent. I'd advice you to take those.
Its good to have more fire extinguishers than required and PFDs (life jackets). Learn how to use your VHF radio
properly and how to read a chart.
Don't discharge or throw anything into the water
that is illegal or toxic.
That's just a start.