This document discusses how teachers can use Web 2.0 tools like blogs, Twitter, and social networking sites for professional collaboration and sharing resources. It recommends starting with blogging on platforms like Blogger or Posterous, using Twitter to build a personal learning network by following other teachers, and sharing ideas, resources, and conducting polls. More advanced options mentioned include using Edmodo, Etherpad for collaborative documents, Ning to create social networks, and Slideshare to share presentations.