PokerStars - $3.11+$0.39|15/30 NL - Holdem - 6 players
Hand converted by PokerTracker 4

BB: 1,365 (VPIP: 25.00, PFR: 8.33, 3Bet Preflop: 0.00, Hands: 12)
UTG: 2,850 (VPIP: 41.67, PFR: 25.00, 3Bet Preflop: 20.00, Hands: 12)
MP: 3,935 (VPIP: 66.67, PFR: 33.33, 3Bet Preflop: 0.00, Hands: 12)
Hero (CO): 1,690
BTN: 2,210 (VPIP: 9.09, PFR: 9.09, 3Bet Preflop: 5.88, Hands: 33)
SB: 1,450 (VPIP: 0.00, PFR: 0.00, 3Bet Preflop: 0.00, Hands: 12)

SB posts SB 15, BB posts BB 30

Pre Flop: (pot: 45) Hero has A A

UTG raises to 60, fold, Hero raises to 180, fold, fold, BB calls 150, UTG calls 120

Flop: (555, 3 players) 9 7 4
[color=red]BB bets 240

readless on this opponent. am i meant to be raising him here or flatting to induce bluffs. it a fairly dry board i guess unless hes flopped a set
never sure what to do when donked into

Donk bets are player dependent, they used to mean weakness and a lot of players advocate raising all donk bets. Due to this trend I have started on occasion donk leading with strong hands like sets and getting it in against aggro players that will raise it. However, that being said on this board with minimum draws a lot of players will be leading with medium pairs and smaller overpairs.

In this situation where Hero has raised me after I raise UTG I would check my sets knowing that in a 3 bet pot Hero will nearly 100% of the time C-bet, and I would either check raise flop or check/call flop lead turn. In your particular situation I think you can take a lot of the strong side of his range out here and get your AA in, expecting to see hands like 1010, JJ or as light as 88.

If villain is decent player his open range UTG should be around 77+, AQo+ and I'd expect him to call with most of that too at this level. So only set you should be worried about realistically (against decent player) is 99 or 77. Shove your AA, and expect to be ahead the majority of the time.

ok thanks for the help on both my posts