Look into classes at your local junior colleges. I know my local JC offers free welding classes, but they are pretty difficult to get in to.
Again, what are you trying to weld? I taught myself the basics at my house with a little 220v flux core box, then took the class at the junior college, and then work put me through a certification class. If you're looking into it as a trade i'd definitely see about the classes. That way you'll have some kind of paperwork behind ya.
Online tutorials will tell you the basics, which is all any experienced welder can do for you. It's trigger time that makes a welder good.
Fo eights in da pickup!