surf arount this and similar forums, you lern LOTS. and go to the Linux Documentation Project, they have TONS of stuff.
and for basic consle wor i could recomned http://floppix.com .
especially their labs, not 100% up to date but...
http://floppix.com/labs.html here you find basic admin tasks and good explanations of them. as i said not 100% up to date but...