I've been looking for many online books and tutorials for Linux, and here are some I think you can check out:
1. Of course, check out The Linux Documentation Project:
http://www.tldp.org/
2. LINUX: Rute User's Tutorial and Exposition
http://rute.sourceforge.net/
3. Article - Linux Books: The Best and the Brightest
http://www.linuxplanet.com/linuxplanet/reviews/4380/1/
4. Newbie's Linux Manual
http://www.linuxdot.org/nlm/
For Mandrake, I think you need to test your display setting after choosing XFree86 version (3.36 or 4.2) during installation, only then the X server login will be started, otherwise it will leave you at command line mode after booting.