Great find, Mahmud. I have gone through all the tutorials and they are simply awesome! Well written, not too mathematical, the slides explain concepts in very intuitive fashion. The tutorials on regression and Bayesian concepts are especially recommended.
Paras, If you get stuck on the mathematics just shoot me an email :-) There aren't much foundational text for "our purposes", so you need to skim stuff from other disciplines and try to make sense of it all.
If you want more approrpiate materials, search for "web mining", the WEBKDD conference published a lot of interesting papers, and if you skim the TOC of their preceedings, you can find the papers online :-)