Well......the best thing to do would be to go to your local CFRC (Canadian Forces Recruiting Center) and ask for some info about RMC and the Regular Officer Training Plan. (Trust me, that's the one you want if you go to RMC).
Chances are, they'll give you some information regarding the ROTP and RMC as well as application form(s). It'll take a while for you to go through the processing (even more if you want to do Air Operations) and it gets frustrating going back and forth to the CFRC, but it's worth it in the end. I went through it and I'm here at the RMC Prep Year in Saint-Jean, Quebec now, and I'm loving it.
Long story short, go to a CFRC and ask for info about ROTP and RMC, they'll fill you in on the rest.
Good luck.