How do you start learning combos for your character?

Last night I discussed the trial combos with a very nice guy from the SRK forums that gave me alot of input. But I was thinking, as you get deeper and deeper into the game, how do you guys start learning combos? I think the trial system is a perfect and easy way to learn combos because it shows the buttons directly on the screen and you also get a demonstration and you can practice it in-game. Only problem is that I cant figure out what volumes are outdated and wich ones arent for my character (Ken).

Do you guys search for combos online in a text file, or do you watch matches and write down the combos on a piece of paper and then drill them in training mode or how do you go about it?

Thanks guys.

//Nakeysnakey