First off, welcome.

I am by no means an expert, but here is some sound advice for your questions.

1) You should be raising these hands preflop...to cut down on the number of people that see the flop...you want 1-2 callers. Your preflop raise is determined by the number of callers....if you keep getting 3-4 callers...raise more. If you don't get any callers, raise less. You should be able to gauge the raise size by watching others raise preflop. Once you have 1-2 callers with AK, AQ post flop, you can make C-bets on some flops. Bet around 2/3 of the pot. The flops you want to make these on have to have a certain texture...Q73 rainbow flop is a great flop to bet at against 1 opponent. The reason is there are no draws to stick around for...if someone sticks around after you bet, you are usually beat.

2) You should be raising PP (10+) almost always pre-flop. If the flop brings 36Q all clubs or 789...you want to bet hard at these flops (bet the pot). If the flop brings two to a flush or two to a straight, bet 2/3 of the pot...and bet the turn if the straight or flush is possible on the turn....if you don't bet here...someone can take this pot from you for nothing. Your chances are good if you bet the right amount at the pot.

3)If you are in late position and have 3 or more limpers in front of you, you can play suited connectors...just realize you are not looking to make top pair...you are looking for the flush or straight, trips and two pair.

I think that is all I can think of now....This is fairly basic advice to start out with, and you will adapt some of these strategies for certain opponents. Hope this helps.