I am new to the world of coding, XHTML, CSS as well as PHP. I have come across numerous tutorials regarding positioning i.e. relative, absolute and fixed however have no ide
For understanding CSS positioning, you need to get familiarize with the "CSS BOX Model"
There are tons of tutorials online. Here are some good ones with examples for beginners:
http://www.brainjar.com/css/positioning/default.asp
http://www.tizag.com/cssT/position.php
http://www.alistapart.com/articles/css-positioning-101/