Well, how about a list of some things you will see in a FR that you should not repeat.
1. The overpair shove: A guy will call a big raise with A6, hits the six, but other guy shoves, so A6 calls and finds....the other guy has KK/QQ/JJ or a set, etc; Unless he catches a 6 or an A, he is dead (and drawing almost dead if the guy has a set)
2. The "what's a kicker?" syndrome: They show up with one paired King, but a duce kicker, so they lose to a sucker who played K9. Or both lose to a guy with AK.
3. "But, it was suited": many only play Ax or Kx suited. Far more play any two suited cards and guess what? You are most likely drawing dead to a higher flush.
4. "I got a pair; lets rock": one pair is not squat. Yet, many will call/shove all in on horrible boards with one pair.
5. "Oh!OH! I want in!!" There is no such thing as a good pre flop hand if in a 5 way all in. Not even aces. Seen many a better hand get destroyed when in a 3 or more all in preflop melee.
6. "I gotta pair, better bet big UTG": Need I say more? Raising 5x with 88 UTG is suicide. Better pairs will 3 bet/shove, leaving you hoping for a set. Actually, betting huge is a major mistake many make. They just end up looking at boards horrible for the pair they hold, end up losing more chips or folding after shelling out a huge chunk of the chips they are going to need later to survive.
7. "I'm going to slo play and trap this sucka!": Yeah, and letting 4 others limp in for a free flop could never backfire for your AK or AA, will it?
8. "If I never bet, only call, they will bluff off all their chips to me!": Or, more likely, they will have your fantastic flopped 2 pair/set beat by giving them two free cards to beat your hand. Plus, you will NEVER get proper value always checking your big hands.
9. "I can slo the game right into the money": Sure you can. Drag down the timer each and every hand. And find yourself 110 players away with 5 big blinds. Good luck with that, zippy. BTW, this is a very pervasive "strategy". There are a huge number of morons out in poker land that actually think they can do this. MAYBE close to the money with a short stack; but as a whole-game idea, it's just stew-pid. Yet, this does nothing to stop them from running down the timer in a game with 5 minute levels and 800 entrants, trying to make that magic min pay.
10. "It's just a freeroll": Covers-it-all excuse to play any two cards, OOP, badly and still suck out.