KotangaGirl
Pre-Grouping Railways Nut
There's still a lot of content creators using GMax Rutger. If it does what you want and you know how to use it you might as well keep on with it. Sketchup 8 with my 'L' plates on is about my level when it comes to 3D software so I use IM Editor to fix problems with older models. I don't know of any tutorials and I've largely learned to use it by trying things and seeing what happens, but others here might know more.