I don't know the specifics of this situation, but I can make some general observations:
1 - Moderators want to make sure that ranchers' posts are civil and nice. 2 - Moderators look out for piracy of copyrighted material. 3 - Moderators look out for cheating on exams. 4 - Moderators and ranchers in general recommend books that they think are good - if you go to the bunkhouse you'll find TONS of favorable book reviews...and of course some not so good reviews too.
Based on long experience, I'd guess that if your post got edited, it's because you violated 1, 2 or 3.
Spot false dilemmas now, ask me how!
(If you're not on the edge, you're taking up too much room.)
Based on what remains in the thread, it looks to me as if you were asking for a PDF of the book. In other words, you were asking for help in stealing the book, rather than buying it for yourelf. You'll find we have a very low tolerance for that here!