Come back to these next year 2012 when starting my library lessons for year 7

More about 21st century learning
http://www.ala.org/aasl/guidelinesandstandards/learningstandards/standards

Teaching about and with social media
Read
Note many of the ideas presented by Valenza could be utlilised by libraries in education sectors other than schools, as well as public libraries.
This article highlights how information professionals can use Twitter and FriendFeed to support their own professional learning, however, you could encourage your users (especially if they are eductaors) to adopt a similar approach to support their professional needs.
This project is ground-breaking in that it is trying to provide evidence of the impact of that this well-known social networking course in the Australian information profession in public libraries.