Well, cards to be folded actually depends. What is the size of your stack? How many players left? So technically, all hands are good if your stack is high. When you are at low stack, you only push all in an any cards, that are playable, such as picture cards or pocket pairs. For AA, KK, QQ, you should always push it all in no matter what, if you don't you allow someone to view a"cheap"flop, and therefore allowing them to catch cards. Best way is to wait for someone to raise some chips, to make them committed to the pot, them push them all in, if they fold or call, your gain. With AK, or similar cards, you should mildly raise, about 2-3 times the big blind. If you catch nothing on the flop, try to bet and steal. If they call, slow down, if they raise, let them have it. Hope you found that advice helpful, and by the way, I've played in live games for the WSOP, actually making it to the money round several times.