Training.

Ok,everyone here is the training program I put myself through in Thirdstrike.

1. Know your fighter's range. Some people forget that their fighter has a longer range than their opponent's,matches are won on this principle.
2. B&B combos..(aka Bread & Butter combos). A fighter's b&b combos are the tried and true ones that everyone mostly knows about. (Example: Akuma's Crouching MK into Gou-Hadouken)
3. GO THROUGH ARCADE MODE! I can't stress this enough,people overlook this feature an it's a shame because going through Arcade mode lets you get a "FEEL" for your character or any fighter really.(Me personally I go through it aiming to get S RANK on each bout,I can get a few with Sean haven't gotten any with anyone else.)
4. Watch how other people play with your fighter. This has two effects,(1.) You get to know that person's play style.(2) You get to pick up on some things you may not have discovered yet. 
5. Develop your own play style! This should be the reason you play,your bringing something new to the table an its always refreshing to fight someone with a different take on a character.

Remember there are more tips than these.This isn't the "BE ALL END ALL" list,when more tips come to me i'll post them. Coming up next: "PARRY TRAINING"!

(Personal note: I developed my style from scratch in the arcades,an refined it over the years.I'm more aggressive than when I first started out.)