Hand 1 I like with reads. You're forced to call a push though.
Hand 2 I'd be tempted to call down from the turn on. He made a terrible small bet giving you a cheap showdown so I say you take it and make a note. He is never folding a jack, 5, or baby flush.
Hand 3 Reraise preflop sometimes but calling is OK. I think you got lucky he missed his draw because this guy is a station and would call with QJ. Make your turn bet bigger, 28 at least if you are going to float.
Hand 4 Why are you betting so big on the turn? Double barrel is standard here. I don't hate the river call but I would probably check/fold. It looks like such a value bet and I think he has a showdown value hand he wants to check behind a lot.