Looking for sites and books on learning MACOSX

First of all, I want to say that I am not new to computers, so I am not looking for something that will assume you barely know how to turn a system on or use a mouse, or are unfamiliar with standard concepts such as copy and paste and so forth.

I've been using Windows and DOS for over a decade now, so mostly my experiences are limited to the Windows GUI and the DOS CLI, as well as performed dozens of hardware upgrades and system builds.

I have a Mac Mini and have been trying to learn MACOSX on it, but there is only so far you can go by trying to self-learn, and I am typically heavily reliant on keyboard shortcuts, which of course are completely different on MACOSX.

I am not just looking to learn how to use MACOSX (though I am also looking to do that) but to also learn how it works and how to troubleshoot/administer it. I know, you need to learn how to use it before you go more advanced, no need to point that out to me.

Anyway, are there any good sites, or preferably, books you can recommend about this?

I have seen a few books in a local book store that were massive and might be what you are looking for mate. And maybe this site might be what your looking for http://www.xlr8yourmac.com/