The Anatomy courses are very in depth, blending medical and art anatomy. I have not seen another class that is put together as well as Marcs in that regard.
The classes are all Marc's techniques, and he teaches them quite well. Being able to ask questions every week on the Saturday stream is also very helpful.
I have recomended this to a few friends and shown them bits of the classes and bits of the information that Marc teaches, they have gone out and purchased the classes looking at the more in depth stuff.
And yes, term 1 is very basic if you already know Photoshop and basic art theory. There is a fun class on zbrush that is technique based, and spot on courses in anatomy. He just put out the new term 6, but I have not delved deeply into it yet.