Has anyone read "Bobby's book"?

You mean "Bobby Singer's Guide to Hunting" (one pictured)? Then yes, I have--actually I own a majority of the books, can just ask me, lol.
But anyways, I found it quite interesting, I can see Bobby's perspective in it which is quite a read. It is mostly giving examples of hunts he's done but as well as give you insights of what happened in Omaha and Rufus etc. It's a great example of a personal perspective which makes it unique however, it does seem a lot like John Winchester's Journal, just more hunting stories and such.
It is a good read if you want to know more about what Bobby personally thinks and how he feels about things. But it isn't too much of a book I was jumping up and down about :)