Something to consider. Simulations implementation is the same as all fe programs, so don't necessarily focus your search with solidworks sim. General fe forums might get you more hits.
Only thing that comes to mind is Vince Adams books.
A mentor and some training is usually best in my experience. We don't offer German, but could help you in English.
This is an excellent question. I was just looking for such literature myself and can up empty. There are a few things on youtube about it, but only a few basic types of fixturing. I need more extensive literature that describes each fixture (including advanced fixtures), and what they do and why you would use such a fixture (as there are many options). I will look at vince adams' book to see if it has anything.