I would just Google a few terms such as linux, newbie, howto, commands, sysadmin. You'll find lots of pages full of help. In UNIX/Linux/FreeBSD there is a manual for every command and its arguments. You can access it by typing the 'man' command. Any search engine, words like 'howto' and your own curiosity are the way ahead.
Here's one link to start with.
http://www.groovyweb.uklinux.net/?pa...e=unixcommands

The best recommendation I can give you, though, is to have a focus. If you head into this without a focus you might as well not bother. You need a goal, a reason to jump into this. Without a focus you won't have the satisfaction of achievement along the way and it will all ring kind of hollow to you. Pick a modest goal and learn the things that are necessary to achieve it. When you get there, pick a new goal. The more you know, the faster you will learn. If it makes sense to you then that's all that matters.