i dont see the need in one, if they teach you how to do something your going to forget soon and if you dont then you only know one thing and if something happens your screwed becuase you dont know how to do it. Look up some tutorials on youtube and experiment learn what all the buttons and tools do know your way around the program before doing anything then use common sense to make something, over and over again untill you know how you can do it and upgrade from there ask for opinions and rates if you think its good and keep getting better. any GFX teacher wont teach you much they are pretty much useless unless your paying them long term and your on with them every day preferably in real life.