As an engineering student majoring in interdisciplinary engineering and two years of CAD experience in AutoCAD and Fusion, I found sourceCAD to be the perfect fit if you are just starting out, already in the field of engineering and architecture or if you need to refresh your skills or master a new skill. They also have an exclusive forum where you can ask questions about their courses specifically, you can also ask questions on Autodesk forums or even individually email the course instructor(s) if you need help.
I had finished a 3D modeling a Coca Cola bottle course on autoCAD and even though I had trouble revolving a piece I got help through their forums from one of the sourcecad staff. They also have a blog with lots of helpful tips and instructions as well. Review collected by and hosted on G2.com.
The only bad thing about it is the forums; only a few people contribute to it so I usually have to post my questions on both forums including Autodesk official forums. More courses should be added even tutorials on fusion. There are not many tutorials on CAM and generative design., and any specific material needed for Autodesk official certification Review collected by and hosted on G2.com.