About the continuation bets I think it depends on what the other players are like and your position. In the low limit games I play I'll raise the c/o or button often with air, and then when everyone checks the flop bet out. Again 4 out of 5 times everyone folds. However do keep an eye open for the one who realises what you're doing.
I got one. Again these micro limit games nearly always has some guy who goes all in appearingly at random. A typical situation is like this. Utg folds, call, fold, all in for about 75BB.
Sometimes he gets called, and can have anything from air to aces.
I guess my question is, what should my range be to call all-in against any two cards?