If you want to learn Red Hat for enterprise type stuff.. I recommend taking your happy butt to Best Buy and picking up 'Red Hat Professional Workstation'
This is Red Hat Enterprise Linux WS without the advanced levels of tech support from Red Hat Inc. I includes *most* of the tools of ES and AS servers, but enough to get you learning for sure. The basics are all there though: Apache Web Server, Mail Server, DHCP, Samba, etc..
Also, a good book to check out for beginners is the Red Hat Linux Bible. It generally includes Fedora Core, but if you want to learn Linux for enterprise computing...don't use Fedora.
Welcome to LQ and Good Luck
and as Poetics said, please don't use all caps...