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You can always go to linuxcommand.org to get a handle on basic Linux Commands, as the name suggests. Linuxforums are always a good place to seek help for linux issue, but be forewarned, most of the posters there expect you to have at least a minimum understanding of linux so that at least you know what questions to ask and how to implement the solutions provided. If you really want to put in the time and effort, the most comprehensive option for learning Fedora is probably fedoraproject.org/wiki/Classroom. This will give you everything you want to know, but it requires some effort on your part. Have fun with it, there are so many diehard linux users for a reason.