Vorticon, then I highly, highly suggest you try the Eggplant tutorial on the Anim8or website. Don't be put off by the subject you are creating. It is learning how to do it in the first place that is the goal.
I was completely lost for a whole day after I downloaded Anim8or. I couldn't do anything.
After the eggplant tutorial opened my eyes to how the software works. Don't draw a polygon freehand, but use a simple one to start and mold/move/extrude it to get the shapes you want.