You probably wont want me to say this but designing isnt something you can just pick by reading a few tutorials, Yet, you can get the idea of how certain things are done but you wont be able to just read a few and say your a good designer. Best way to learn is really just look at other designer work find out how they done that certain style or how they made that look a certain way, Just study, study, and study and you will eventually pick it up.