Is there a way to save IDW files as images without a screenshot?
Do a "Safe File As" and select bitmap (.bmp).
How do you get the disconnected assembly and bill of materials into an inventor drawing (Like team 75's submission last year (www.roboraiders.com click on design showcase))?
Not sure what you are referring to. Can you give the specific example on 75's submission?
Is there a good tutorial out there for animation?
http://www.sdotson.com has a whole lot of great tutorials for Inventor, including everything you will ever need to know about animation.
Is there anything else you think we should know?
If you didn't do the tutorials that came with Inventor (hit Help on the menubar and select tutorials) do it now. They will save you a bunch of time in the long run.
Good luck!