After recently starting to read again, I got interested and picked up a few more books.
The first one I read was Nausea by Jean-Paul Sartre. That book, in return, made me think about life, etc.
So my question is if there is a book which manages to explain multiple philosophies.
In case there isn't, is there a List of Books, which each explains a different philosophy in detail.
If possible the books should not be too long.
Also I aplogize in advance if this isn't the type of question which should be asked here.
Edit: If the books are in german, that would be a plus, although English is fine too.