Hand1: About an hour in I got Aces, and raise to $10, 4 callers. Flop comes something like 367 with two clubs.. I lead out for ~$30, and first guy goes over the top to like $150 or $175... basically took a stack of $25's and threw it in.
I realize he's quite likely betting a flush draw, maybe a straight draw too... MAYBE he hit a set, that seems possible with the overbet to confuse me...
I ended up folding, he mentioned that any club or 4 helped him, so he had the gutshot with the FD. I did not have the ace of clubs... too tight of a laydown?
Given only this information, I don't think this fold is a bad play. With 4 callers going into this flop, it's can be a judgment-y kind of spot, and my judgment is leaning toward a fold too. You're only way ahead against a few hands (mainly overpairs), modestly ahead against decent draws, and nearly dead when you're beat. The presence of many players "protects" the pot and makes it more likely than usual that a big raise is what it represents.
However, it's important to think about position here, as well as the tendencies of your opponents. Absent that information, it would be hard for me to stack off with AA here too, especially on a short roll.
Also, if $10 raises are getting 4 callers, you may want to ramp up your preflop raise size if you want to thin the field. Pay attention to this kind of stuff and adjust as necessary. Live preflop raise sizes can be very different from the typical stuff you see online.
Hand2: I get AK on the button, three or four limpers, I raise button to $15. Guy in SB on my left, a really good player, repops to $60. I think and fold like a flipping idiot, I think I should have called the $45 and seen a flop, if I bink a A or K, jam it, if not, fold.
Contrary to popular opinion, I don't hate this fold, but it kinda depends on what "good player" means. If it means what I think it means coming from you—a guy who plays a very standard, TAG type of approach—I like the fold. TAGs often turn up with big pairs here, and $45 more with only ~$200 behind is a bit steep to pay to draw to an A or K that probably won't get welcome action if SB does have a big pair. There are way better spots in hold'em*.
If by "good player," however, you mean someone who has been putting people in tough spots, laying clever traps, and making well-considered plays, I think a fold is not great. As noted in other posts, smart players will sometimes re-pop your button raises because they know you'll be raising lighter than usual, often enough that stealing your $15 makes it profitable to raise wider than usual. With $235-ish behind, you know what the best play is there, right?
Hand3: QJ suited in late position, I raise to $10, guy to my left calls, and crazy guy raises to $50. Guy to my left will definitely call... was I incorrect to fold here? A bunch of action happened later in the hand as I expected it would, but as it turns out I would have hit a Q and won with my J kicker over guy to my left that had Q6.
This isn't a terrible fold. Don't concern yourself with the fact that you would have hit a queen and won. Concern yourself with the fact that, if you'd called the $50 raise, you'd be in a $100 or $150 pot with ~$200 left, holding a hand that desperately needs to improve and will often be second-best even if it improves.
As to the opening play, a bigger raise might have been okay, but $10 is really not super-small for $1/$2, and is not terrible in late position with no limpers.
* Watch for these spots, and don't be afraid to strike when you see them. Particularly in live NLHE, you're going to be at the table with the same spread of opponents for a long time, and a lot of them will be pretty unsophisticated players playing predictable styles. Watch them do what they do. Learn them all well. Chit-chat with them to gain information, if necessary. If any of them have meaningful tells, figure them out and figure out what they mean.
Also note that playing a predictable TAG style with reasonably deep stacks is a big handicap. If you wear a big TAG sign around your neck, you'll tend to get crushed by the tougher players in big pots. Poker is a game of information more than it is a game of patience; it does you no good to wait around for AQ+ if it may as well be face-up when you finally play a hand, and that's not even mentioning predictable post-flop play.
Finally, the scared-money concept is important. If you find yourself nervous about making a $200 bet just because it's two hundred whole dollars, you may as well rack up and find a smaller game. You're defeating yourself before your opponents even have a chance to defeat you.