Hand # 1:

Raise Pre-flop...Raise the flop...raise the Turn....raise somewhere. Played this one way too passively...you probably had the best hand on the flop and turn. Had you raised either of those streets you probably would have taken this one down before the river. As played...you never really know where you are in the hand.

Hand #2:

I'm Ok with this. There are two over cards and a paired board and Opp raised your flop bet. I'm playing this one passively and hoping for a cheap showdown and getting out to a major show of strength.

Hand #3

Raise the Flop, and raise it hard. The over bet shows an attempt to take the pot from you. Maybe he has a six, but I doubt that too. Look at it this way...why try to drive you out of a pot, if he has the nuts. He's looking to get as much from you as possible. With that in mind, he'd probably lead a small bet or check raise your C-bet which is almost inevitable heads-up following a PFR. The turn brings an interesting card. If he had that six he's now filled up and you probably won't get him to fold this hand. He probably doesn't think you have any piece of it, maybe AK or some other over cards. His bet here doesn't seem like a bluff, more like a value bet. Your failure to raise the flop really makes this one hard to play on the turn, but as played I think you're beat and I either raise/fold or simply fold. Double paired boards suck. The river is interesting too...I'd almost say you could win it with a push here. He's nervous about you just calling his bets down...which means he probably has a PP or maybe that underhouse and is now worried that you slowplayed him to death. I see no other reason why he wouldn't push the river himself.

Hand #4

Re-raise the turn, fold if he pushes. Otherwise that's poker.