so much to know, I have to start somewhere.

I need some suggestions on what to study. I have the attention span of a flea. I have been reading everything from basic server 03 to server 08. Security, group policy, (now scripting //sigh) I am jumping from subject to subject but I am afraid I don’t know enough and if something happens that I don’t know how to fix, it will be too late. So I am planning to buy some MCSE books, any ideas suggestions which ones would be good for someone who is not completely clueless, but has holes in knowledge.
I more of a hands on learner, but pop up pictures are nice.