Can any of you Linux gurus be able to point me to the F**king Manual?
I don't normally correct spelling, but you don't spell "freaking" like that; it has one more asterisk!
More seriously, the biggest collection of wisdom I have ever seen in one place, pertaining to this general area of expertise is "Essential System Administration" by Frisch. Of course, maybe you aren't asking about system admin; you don't make it clear whether anything specific concerning Linux is what you want or just anything.
If you wanted "programming under Linux" books, then Beginning Linux Programming is pretty good on the basics and the underlying system. But you might want something more specific to a particular language.
As mentioned earlier O'Reilly do a lot of good books; historically, they have been strong on readable books - given that I'm distinguishing between 'readable books' and 'manuals' (in which you look things up, but don't read from cover to cover), you have to decide what you want.
On the other hand, these days, they also do 'Nutshell' and 'Cookbook' which are less 'readable' and more 'look up the solution'. So, er, again it depends what you want.