StumbleUpon is a serendipitous web-discovery tool. You let it know you interests and it will find relevant pages. ‘Like’ or ‘dislike’ pages, and it learns your preferences. Makes finding and rating new sites easy, especially with the SU toolbar and SU icons on other sites.
You can follow channels to find information quickly for example the TED channel will keep you updated on TED information.
StumbleUpon can also provide media and resources for keeping teaching sessions fresh and up to date.
Use the StumbleUpon getting started guide to begin stumbling.
When you have created an account you just click the Stumble button in the top right hand corner to start stumbling and finding webpages.
This video shows you how to use the lists feature:
This video shows you how to manage your interests, connections and channels: