The game play is very fluid. You have a lot of options each round, and figures can activate multiple times per round.
There is no need to memorize your character's super powers, they are written right on the card.
I don't know if there are free rules for Supreme edition, but there used to be for the 1st edition.
I have several extra figures, PM me with a list and I'll see if I can get them for you, provided you don't mind paying the shipping from Canada.