5 years on Inventor and still failed my associate exam 😳 you have to know every option, menu & sub menu, even if you only use it once a year.
Just looked on Autodesk Labs and you can try Inventor over the web, but alas only in the US & Canada. May get over here at some point.
There’s another program I heard of called CoCreate (oops..now Creo Elements) that apparently is free (with restrictions), might be worth checking out.
http://www.ptc.com/products/creo-elements-direct/
It is not a history based modeller though, it is a feature based modeller. Do you know the difference?
Good luck jools. It’s tough to change software but if you can get some skills, 3D CAD is certainly never going away. Can you not find much autocad work at the moment?