Hold'em table

On the button with Ace-high, raise for value/isolation against blinds preflop.

QJo is strong enough to continue against a button open, and calling keeps the pot small while realizing equity in position disadvantage from the big blind.

I have top pair with a queen kicker on a dry flop and act first. A half-pot lead gets value from worse jacks and overcards while denying free cards.

Jack-five offsuit is far too weak to play from the button against two random opponents; folding preserves chips for better spots.

Button folded, so I only need 50 more into a 150 pot with J8o. Completing is the right price out of position rather than bloating the pot with a dominated offsuit hand.

K2 offsuit is weak; I'll check my option and see a cheap flop against a single limper.

I have only jack-high with a gutshot and no pair or flush draw, out of position. Checking keeps the pot small and realizes my limited equity for free.

No pair or draw with K-high, checking back to see a free turn card.

Jack-high with no pair or draw on an ace-queen-ten board has little showdown value, and a turn bluff into the big blind is unlikely to be profitable in a tiny pot. Checking keeps the hand cheap.

K-high with no pair or draw on this board; no value in betting, checking to see the river cheaply.

Jack-high has no pair or draw on this river, so a bluff into a checked pot is unlikely to be profitable. Checking realizes the free showdown.

Weak pair of twos with king kicker; no value in betting and no need to bluff into a check-down.

73 offsuit is too weak to open from the button for a full big blind; folding preserves the stack.

Heads-up vs BB with A2 offsuit, a small raise builds the pot and applies pressure since button already folded.

K8o is a weak hand facing a 3bb raise out of position heads-up; folding is the profitable play.

J9o on the button is a reasonable open in a 3-handed game; raising applies pressure to the blinds.

Pocket sevens set-mine cheaply for only 200 into a 400 pot with both blinds in, keeping the pot small out of position while retaining strong implied odds if I flop a set.

4-2 offsuit is too weak to continue against a button raise and a small-blind call; folding saves the remaining 150.

I flopped top set with 7-7 on 6d-4h-7h, and the board has flush and straight draws, so I bet ~75% pot for value and to charge draws rather than slow-play.

I have no pair, no strong draw (only backdoor straight potential), and facing a large flop bet, folding is the correct choice.

A2s is a standard button open in 3-handed play; raising to 3x builds the pot with position and fold equity.

25o is a weak offsuit hand facing a button open to 3bb; folding from the small blind avoids putting more chips in with poor equity and reverse implied odds.

J4 offsuit is weak facing a 3x raise; not worth calling out of position.

On the button in a three-handed pot, K8o is a reasonable open: position and fold equity justify a small raise rather than limping or folding.

Q2 offsuit is a weak hand facing a raise; folding is correct from the small blind.