Web 2.0 are the the technologies that let you share, create, communicate and interact online.
There are new tools coming out all the time. This guide is just one place to check out some of the options out there.
This guide is organized by the the different types of things the technologies can do.
Keep in mind if you are a member of the SUNY Plattsburgh college community you have access to many of the Google tools (Drive, Hangout, etc...) through your campus account.