The first step is meeting people, though! You can't know what people are into until you talk to them I've met lots of nice polypeople at local meet ups: no one I'd be interested in, but that doesn't mean it wasn't worth it. Getting support from like-minded people is helpful, too, and there is lots to learn from seeing how other people "do poly".
You might want to revisit your definitions. Polyandry means married (as in the legal institution) to more than one man. This is illegal in Canada. But polyamourous relationships with more than one man are legal.
Canadian from BC here, new member exploring polyamory! First polyamory relationship started last night. Looking for friends to see if anyone would want to become buddies and chat sometime about this or anything else!