[Trent B]

I have taught myself Inventor and SolidWorks and neither of them were very hard to learn.

One thing I will say is the tutorials built in are nice to learn the gist of what given tools do but it doesn't really teach you how to use them. The tutorials are sort of contrived and very simple. Earlier today i was trying to model and subsequently make a drawing of a crystal structure and Inventor was having some constraint issues (I think it may have been a geometry problem on Inventor's part) but real world applications will throw new curveballs at you that the tutorials don't.