#1) I've been experimenting w/ getting more aggressive lately, so I may raise him PF to get a better idea of his holdings, make him hit his hand to win the pot, and to make it easier to get paid if you hit your set and hits something. Then again this would reduce your set chasing odds, so maybe it's best to call like you did. As played, fold the flop.

#2) well played, fold the river.

#3) First off, fold preflop. You only want to play the best hands UTG. In FR I stick to pp's, AK, and if I feel good about the table maybe AQs, but even that is usually a fold for me. That said, I'm pretty sure the BB has you beat here. c/c flop and lead turn tends to be something good most of the time it seems, and with that bet size he wants you to call. That said, it's a small bet and would be hard to fold to. Definitely fold the river though.