Originally posted by GingerKid
Originally posted by lnternet
1) In general you want to play in a way which minimizes EV for your opponent. When betting, with typical poker ranges, this often means you want your opponent to not be able to continue too many or too few hands.
If opponent can continue with all hands, you aren't minimizing his EV. You could bet a tighter range or choose a bigger bet size.
If your opponent can't continue with any hand, you aren't minimizing his EV. You could bet more bluffs (bet more often).
So generally, you want to bet with a range where villains range folds and continues "at reasonable frequencies".
On the flop, villain has many hands that fold to our bet size. Low pairs, Axs, some others. So the flop size is certainly fine, as villain folds some reasonable frequency of perhaps 40%.
2) Overbetting makes sense. However, check raising is likely better.
3) Yes. Figuring out which hands to bluff with exactly is not that easy for me though. I think AK/AQ are fine. (Although you surely don't want to bluff check raise too much, which would allow the opponent to continue every single hand)
Thanks for the detailed answer. I must admit, I got a bit confused with choosing correct bet size. I know from theory that 3/4 or 2/3 pot bet size give best results, because I guess statistically it is "proven".
I usually like to understand why, for everything I use, and you seem to me that you know math and poker, thats why I ask you.
If you said, when you check/raise turn you want to choose raise size such that it gives bad prize for villian to call with draws. Why not choosing all in, it gives him worst EV to call? Also with going all in, we can even choose more bluffs and stay balanced, so I dont see why should we raise as you suggested and then we need to bluff also some hands on river where bluffs have 0% equity? I guess the reason why not to go instant all in, is that villian in that case needs to defend only low % of hands, which allows him to choose only strong hands?
I hope I dont ask too much, and would like to hear your explanation.
You don't want to given him the worst EV to call. You want to minimize his EV. This means, over all of his hands, his total EV should be as small as possible.
If you jam, yes, his EV of calling with a draw is very bad. But he will never call, he will fold, and have that EV of folding. He will also have that EV of folding with his draws when you raise smaller - up to the point where they have a profitable call. So against his draws, any size from big enough where he can't call, has the same EV. So now think about his other hands, like nuts. They have the highest EV when you jam. They have a little bit smaller EV when you raise smaller. So against those, you want to raise as small as possible, to minimize their EV. If you take those two, draws and nuts, together, you see you want to raise not to small and not too big 
Often that size is reasonably well approximated with 2/3 or 3/4 pot. But certainly not always.
Think about open raising preflop. Just going allin with AA and ATs is ok. But it's a bad strategy, as you fold everything else, and thus your opponents have good EV. Open limping with lots of hands is ok as well. But that again is a bad strategy, as your opponents can very often so many hands profitably when you limp (especially BB), and thus they have good EV. So you want to raise preflop, but not too big. How big.. nobody knows, but 2-3bb seems good 
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