40,000 word e-book on Linux and Unix troubleshooting by an author with more than 20 years of experience doing just that.

NOT a "how-to" book, not a rehash of problems you can easily find with a Google search.

You don't need a book for answers you can find in Google.

Of course it looks at specific problems, but this is much more about the process of solving problems than it is about anything specific.