Looking good! With many of the tools you're refering to, there are tons of "How To's" already created. Guides and screencasts and more... So you might want ot consider spending a brief time pointing out places where people can find resources for the HOW TO part, and spend the bulk of your time covering the 'Why you'd want to?' and 'What you do with it' parts. Also, don't neglect the younger grade levels. Kindergarten so often gets lost in the shuffle!