Need recommendation for good Linux reference (ubuntu and Fedora)
I'm an experience UNIX user (or was, because I've been stuck supporting Windows applications for several years). My company now plans to support Linux as a platform (ubuntu and Fedora). Do you have recommendations for a good Linux reference to use? I've used the O'Reilly UNIX quick reference in the past, which was helpful but not too in-depth. I'd like something that answers both simple and more complex questions.