1) If all your Pokemon faint in a battle, the opponent wins.
2) There's no mechanic for that in the Micro Edition though I'm working on the Mini edition and it'll probably have it in there. In this one though, it's assumed once you've left the battle, they're healed.
3) It is my inelegant short way of saying to roll the 2 digit d10 (10, 20, 30, etc).
So glad you're enjoying it!