When my problems started in the mid 90s, there was pretty much nothing available other than the more "spiritual" guides. I have nothing against them, but not my thing. These days there is a wealth of books and CDs etc on the subject. I came accross one that really seems well put together and the authors are really honest about the obsessive thoughts and the situations.
I bought it on CD as an audio book but it is available for Kindle or as a paperback.
Pulling the Trigger OCD:Anxiety, Panic attacks and related depression.

I found it very informative and helpful.