4NL - AKs trip kings on river

Villain is 18/12 over 265 hands.

Cake Poker No-Limit Hold'em, $0.04 BB (9 handed) - Cake-Poker Converter Tool from FlopTurnRiver.com

BB ($4.84)
UTG ($3.65)
UTG+1 ($1.35)
Hero (MP1) ($4.44)
MP2 ($4.31)
MP3 ($4.06)
CO ($3.18)
Button ($3.33)
SB ($1.14)

Preflop: Hero is MP1 with Ahttp://www.flopturnriver.com/pokerfo...ilies/club.gif, Khttp://www.flopturnriver.com/pokerfo...ilies/club.gif
2 folds, Hero bets $0.16, 3 folds, Button calls $0.16, 2 folds

Flop: ($0.38) Jhttp://www.flopturnriver.com/pokerfo...ilies/club.gif, 10http://www.flopturnriver.com/pokerfo...lies/heart.gif, 9http://www.flopturnriver.com/pokerfo...lies/spade.gif (2 players)
Hero bets $0.24, Button calls $0.24

Turn: ($0.86) Khttp://www.flopturnriver.com/pokerfo...es/diamond.gif (2 players)
Hero bets $0.43, Button calls $0.43

River: ($1.72) Khttp://www.flopturnriver.com/pokerfo...lies/spade.gif (2 players)
Hero checks, Button bets $1.16, Hero folds

Total pot: $1.72 | Rake: $0.11

Was the turn bet or the River Check/Fold, a mistake?

I think turn is a mistake; what calls that you beat?

Think I just c/f turn tbh.

1) Get better at gaining reads on villains. PF3b, F2CB, reads on aggression and dynamic are all stuff you should have well before you hit the 265 mark.

2) How often does he call preflop with K8? How often does he call this turn with AJ? When you check, how often is he going to turn worse hands into a bluff?

Surviva, your posts are making me realize how much work needs to be done on my hand reading skills...! It looks like a huge sticking point in my game.

That's the beauty of posting hands. I'm glad my words make sense.