I agree whole heartedly with hihosilver. I have only been using Anim8or for about six months, and just about everything I know about it I gleaned from the PDF manual and experimentation. The most important thing is to set yourself a goal. For instance, how about attempting to model a room in your house. Look at each item in the room, and think about how you might go about modelling it, creating materials, etc. Each problem you face can be solved using the manual, the excellent tutorials on this site, or good old trial and error. Certainly there are some things Anim8or lacks, like truly ray-traced reflective surfaces for example, but some lateral thinking usually provides a solution.