can anybody take me through it step by step.
Just "play" with it.
Until you "break" it.
Then try to fix it, or reinstall (like I did 3 times when I started, I'm better at it now, because I have had some practise, and more-or-less know what I am doing).
Specific questions can often be answered by a search on LQ, otherwise post it here.
General ones can often be answered by your favourite search engine (and google has one just
for linux-related searches: http://www.google.com/linux
Welcome to LQ!