1- Back to School with the Class of Web 20.: Part 1

http://www.solutionwatch.com/512/back-to-school-with-the-class-of-web-20-part-1/

This website was very helpful.

It was one of three parts of websites explaining very thoroughly the applicationson Web 2.0 and their hyperlinks and a short summary describing each and what they are used for.

The link above leads you to the website.