How exactly do you blow dry your hair?

I've heard about people blow drying their hair and I have a few questions that I'd like to ask.First of all, How DO you blow dry your hair?I tried it the other day, like after my hair was wet, I combed it straight and blow dried it, simple as that.Are you supposed to/Do you have to: use gels or anything like that?I have semi wavy but more straightish long hair and its medium thickness.Okay, the bottom line, give me all the info you can anddoes this technique really work???Thanks everyone.