Let me give you one of my strategies related to, 'table image'. This is probably the most valuable one. I will try to keep it short and precise;
You overbluff in very small pots (2x-5x the pot) and if they fold, you win if they call, you lose a small pot but either way, make sure to let them see your cards.
![Grin](https://bitcointalk.org/Smileys/default/grin.gif)
. Do it very carefully in very small pots a couple of times and you will establish an image of an overly bluffy player. Now just wait for the nuts and repeat the same action, you will be surprised to see that they will call you with anything.
This is especially useful in earlier stages of tournaments when blinds are quite low and pots are also small.
I understand the psychology behind showing your cards after they fold, and in some cases, that's definitely profitable (If people flag you like you want them to).
This also relies on others folding, because even if you are losing only small pots, those add up quickly. And depending how lucky you end up being, it can backfire and make your tactic transparent by you not calling if they rise the pot. There's a reason why everyone is trying to play aggressive at the start.
But as the game is not about winning every hand anyway, being inconstant how you play right after using this tactic would definitely be beneficial and confusing.
Personally i think that showing your cards afterwards is just too transparent bait, and since it's during the start, i wouldn't even think that it's some kind of triple bluff, because there are ton of fishes in the game.
Best "tricks" that i am using are psychological. Reading patterns in people is hard in online games, and almost impossible with frequently ganging tables, but it can be an edge. I mainly focus on my own mindset, where i combat my frustration and try to focus. Realizing the fact that i am not trying to win every hand, or good pocket pairs. What i am trying to figure out is how others are playing those hands and what i am up against.
Biggest kicks i get from getting rid of players who are trying to control the table, while making them think i am just ragebetting against their semi-good hand. That requires some luck and good timing.
Sorry if this too vague, but imho reading people in poker isn't equivalent to chess, where you can calculate moves, while on poker, you need the context (or feel) of the players.