3D Slicer provides a wealth of training tutorials though sometimes there are slight UI variations between versions that aren't covered that you need to interpret for: https://www.slicer.org/wiki/Documentation/Nightly/Training

Here are some of the generic renderings for the spinal modeling project I described, if you're interested (renderings created with Avizo--an expensive commercial application--instead of 3D slicer for specific use case reasons for the sake time savings): https://www.youtube.com/watch?v=dkDVeyLLmFM&list=PLZMGw4TBzq...