I'm interested in learning Linux. I own a ASUS V7000VA Notebook with P-M 2.0GH, 2GB DDR Ram, 80GB 7200RPM. I would like to use this laptop completely for my "learning journey". What Linux OS should I start out with? Since I want to expand my knowledge and advance in Linux, I'm not really looking for a easy OS to stick with...I want to learn and move on. I'm very experienced with Windows XP and has probably more than basic knowledge. Please advise, thanks!