Web pages issue
This is probably not the best place to ask that question, since my book doesn't get into web programming. There are plenty of Wrox book on web programming. Try checking into the blog for the Wrox book you are reading and give a specific page number to the author so he has some background info to work with.
Jack Purdum, Ph.D.
Author: Beginning C# 3.0: Introduction to Object Oriented Programming (and 14 other programming texts)