About Diigo Educator Accounts...
As an educator, your account has been given special privileges to create / manage student accounts and class groups (student email addresses not required.)

Diigo's FAQ page about Educator Accounts
http://help.diigo.com/teacher-account/faq

Getting Started
http://help.diigo.com/teacher-account/getting-started


Nine-minute overview with classroom / research ideas
http://www.youtube.com/watch?v=T36PbLStbSs&feature=related