Look for tutorial sites and ask questions? What sort of help exactly are you looking for?
I'm opening a tutorial based site with KewL on these boards offering tutorials for coding (That css/xhtml too) and graphics so maybe i may be able to assist you there with your questions.
To position i would suggest using floating and adding margins etc.. to style it out better.
If you gave a example of what you'd like to acheive we can all help to guide you how to do it correctly
Thanks