you know that you have missed a lot when you just give up on fedora and turn to Ubuntu , remember that fedora is the beta of Redhat releases which is one of the must supported linux distributions , so if you are aiming to learn Linux to become admin , only fedora will work for you and this days the have made it like MS windows it is just too easy , give it a shoot and i will be here to give help .
I have always heard if you lean Red Hat you will know Red Hat, but if you learn Slackware you will learn Linux. Don't get to into the extras that each distribution gives out until you get used to doing everything in Linux, thats the only way to learn in my opinion.
Try 'Linux in a nutshell' by Ellen Siever. It contains all the commands and explanations. This book helped me get started, although it is more of a reference book than a tutorial. [ July 09, 2007: Message edited by: Sam Bluesman ]
I have used Linux in college to create a NFS and DNS although I forgot some of the commands I still remember a few of them, enough to get around. I have am wanting to find some online resources that talk about the important files in Linux and what they do, also whats called when kinda stuff, along with how it works in general. I am wanting to become good enough with Java and Linux to be able to develop in Linux. As as some of you may know I need alot of help with Java.