ok please excuse the noob question.
I have been playing around with linux for a few years on and off and really don't seem to get too far but recently I have a hankering for getting in to linux and learning it properly. So this site was suggested as a good starting point for projects to work through whilst learning and I must say I am impressed there is a lot of good well explained documentation here. However, I am a little confused as to where to start, I don't want to take on anything too grand and put myself off the whole thing. So is it possible that some kind soul could make a list of the first 20 projects and installations that some one wanting to learn linux properly should do. I currently run cent os as my linux machine, (virtual).
Once again sorry if this is too much of a noob question for this forum.