here's a hand decision example.
Villain is 26-6 over 200 hands. He has low aggression, like super-low.
I don't think he would turn lead a jack. He has 80% fold to cbet, so cbetting probably is smartest here. But I didn't.
Anyway, this hand is for range and decision practice - should i bet or check river. Am i betting for value? or bluffing?

Full Tilt No-Limit Hold'em, $1.00 BB (9 handed) - Full-Tilt Converter Tool from FlopTurnRiver.com

SB ($100)
BB ($99)
UTG ($87.50)
UTG+1 ($98)
MP1 ($26.85)
MP2 ($46.95)
MP3 ($97.90)
CO ($94.45)
Hero (Button) ($110.25)

Preflop: Hero is Button with 10, A
1 fold, UTG+1 calls $1, 4 folds, Hero bets $4.50, 2 folds, UTG+1 calls $3.50

Flop: ($10.50) J, 8, 5 (2 players)
UTG+1 checks, Hero checks

Turn: ($10.50) 6 (2 players)
UTG+1 checks, Hero checks

River: ($10.50) 10 (2 players)
UTG+1 checks, so, decision time