Answer to your question? Is when you downlaoded the Inventor Fusion. What also came with it was autocad 2012. To find it simply go to your start menu, open the Autodesk folder, then open the autocad 2012 folder, activate it or try it out is up to you but when you get to the autocad 2012 another window comes up. with featured videos that are tutorials. since autocad and autocad invevtor are just alike in a way. You can learn from those movies.
I hope this helps some.