When playing really bad players, all you usually have to do is sit around and wait for cards. The biggest mistake really bad players make is that they never fold. If you try to get super aggressive by betting at them a lot, you'll almost always get called by someone with a crappy hand like middle pair and lose.
Here's a general idea of the kind of cards you should play, but you don't need to limit yourself to just these, it's just a guideline:
- Play any pair, and raise into the pot with big pairs like AA, KK, QQ or even JJ.
- Play most aces (especially suited), but beware of people who make huge raises, they may have you beat.
- Play any two face cards, but again, beware of big raises pre-flop.
- Play suited connectors like TJ, 9T, 89, 67, down to about 45.
- Fold all junk hands like K2, J4, 23, etc, etc. Remember, we're going to save money by not getting involved in pots with really crappy hands, which will effectively cause us to get a bigger stack by not throwing away chips.
Raise into pots with the big pairs and AK or AQ, call small raises or limp with anything else. You don't want to invest too much pre-flop because there will be people making loose calls that will call any raise after the flop if they hit anything at all. Remember, you're just going to play your cards. That means betting when we hit something, and folding when we don't.
Good luck and have fun.