I have 2 questions about bet sizing in no-limit holdem.
Your Hero is in an online microstakes tournament. First level is 10/20 with 3 antes. This is only the 2nd round so Hero doesn't know anything about the opponents. Assume each player has a 75BB stack.
UTG and UTG+1 limp. Hero on the button raises to 3BB with JcTc. SB folds, BB calls, UTG folds, UTG+1 calls, leaving 3 players in, with a pot of 237.
Check, check. Hero bets 20, BB folds, UTG+1 calls.
How much should our Hero have bet? In hindsight 20 seems low. I have 8 outs so about 17% of hitting a straight on the turn, so I guess I should have bet 60 since if one opponent calls we have 60/357=16.8%. Is that right?
Pot is now 277.
Villain checks. Hero bets half-pot. Villain calls.
How much should our Hero have bet? Here I have no idea. I just have a feeling I should bet high enough so that the opponent can't see the river cheaply. But I feel I cannot risk too much because they could have K9 or Q9.
As it turns out, the river was Ah. Villain went all-in and dumb Hero called, and Villain showed Ad9s for a full house. Hero immediately realized his mistake, so there is no question here. Hero should have folded. The question is, did Hero made the right bet on the turn and get unlucky on the river? Or should have Hero bet more?