Villain: 24/22 with a 3bet of 19%, hands: 100

Some questions:

1) On preflop should I rather 4bet or fold versus flatting his 3bet?
2) On flop, is my bet okay or should I check behind? What about sizing I thought I might have NUT ADVANTAGE so I chose 1/2 sizing
3) should I bet this turn and represent strength or check behind? If we bet, how much would be good?

Thank you for any feedback!

SB: $5.91 (59.1 bb)
BB: $13.83 (138.3 bb)
MP: $10 (100 bb)
CO: $12.63 (126.3 bb)
Hero (BTN): $20.55 (205.5 bb)

Preflop: Hero is BTN with 5 6
2 folds, Hero raises to $0.25, SB folds, BB raises to $1.20, Hero calls $0.95

Flop: ($2.45) 6 7 4 (2 players)
BB checks, Hero bets $1.25, BB calls $1.25

Turn: ($4.95) 2 (2 players)
BB checks, Hero?

You can go a bit smaller on flop. We're just trying to deny equity/fold out or get value from his overcards. Check turn and try to get to showdown unless you improve to a hand that can beat an overpair

EDIT: as for 4betting I prefer bluffing with hands that have blockers to his value range, Ax etc. SC play better to flat IP.

sounds good

I did bet the turn and villain check/shoved. I actually called and had 30% equity against AA. But I needed 33% equity so it was a losing call. I dont know why I even called, I somehow got this idea that villain could do this with AK... Well anyway I should have bet bigger on the turn if I am calling or bet smaller if I will fold against a check/raise

I think my 1/2 bet purpose was to size the pot so I can shove all rivers against possible 99-JJ. Dont know if villain would fold QQ

If he's checking overpairs it's not to fold them on most run outs. You have the best hand here a decent chunk of the time, especially if you bet flop a lil' bit smaller. No need to turn it into a bluff.

Cool

Probably fold pre. Regs on even much higher stakes under 3bet form BB, so be very tight vs those 3bets.
I like flop bet, you can go bigger or smaller we are ahead of over pairs and if he folds KQ we are find with that too.
I also dont hate to bet turn again, to fold out AK and like a block bet vs AA.

I mostly agree with the above sentiments. Betting here IP on the LLL texture is good and fine as your opponents are likely to very much under x-r you and you have a lot of equity vs. made hands and deny a lot of equity vs. his other holdings. As played on turn facing the x/c I would also mostly just aim to check behind and realize the equity. You're really not trying to get people to fold better hands (over pairs) when you already have a lot of equity and a pair. As played your opponents are not going to be x/j turn with bluffs at any reasonable frequency for you to call off, so as you say in a previous post make sure you're calculating your pot odds and equity vs. something like an over pair in game to make your decision.

With regards to calling vs. the 3-bet preflop, I would agree with Haizem that people are very tight with 3-bets in BB vs BT and you can very much overfold in general. At this sizing (2.5->12) and stack depth (~140) I would call. If it was ~120bb eff I'd say it's very marginal and at 100bb eff it's likely ~0 to -EV. This also assumes you're playing well post flop and not making simple mistakes.

Good stuff! I dont know why I called the jam on the turn. It is rarely a bluff... next tine I have to count to ten before clicking buttons lol