@fleabay I don't know, maybe because I a new user.

There is a book called “Real Time Cameras: A Guide for Game Designers and Developers” by Mark Haigh-Hutchinson.

I'm just passing this along to be informative, not as a recommendation as I have not read the book.

Imho the dx9c book still provides a lot of information that's still relevant. So if you can get a hold of it cheap, sure why not. If you have the choice though, 11 would be better.

Besides version specific topics, a lot of things covered in these books are not version dependent (theory's, math etc.).