I'm a first year architecture student and I'm currently trying to find good resources for learning AutoCAD.

At the moment I'm a little bit frustrated since I wasn't expecting it to be this hard to pick up the basics. I was hoping that I could learn a lot by playing around and a lot of trial and error, which didn't really work out (I really know my way around a lot of programs including Photoshop, After Effects, Sony Vegas, SketchUP...etc.). So I would love if there is a resource out there that covers the basics very well.

I'd really appreciate it if you could help me out. And any tips on how to learn best would also be great.