This document provides an overview of key concepts related to WEB 2.0 including: defining WEB 2.0 as collaborative websites that allow user-generated content; explaining features like RSS feeds, widgets, wikis, blogs, APIs, microblogging, and wikis; and listing resources for educators like Wikipedia, Wikispaces, and Google Documents. The document emphasizes how WEB 2.0 enables participation, cooperation, and interaction through user-generated content.