Great video tutorials/screencasts broken down by topic. Login via elon.edu/lynda
Used to not be compatible with Macs, but seems to work in FIrefox or Chrome (not Safari) and works in Internet Explorer on Windows. If you are asked to install a toolbar, just be sure to "uncheck" things you don't want.
The CartoonYou app is what you want to use.
Tammy Worcester Wang is a popular presenter at educational technology conferences - standing room only in her sessions. From this website of hers, you can use the tabs across the top of her site to access more than just the tip of the week - Google stuff, student activities, handouts and resources (including iPad and Web-based ones).
In this blog post, Richard Byrne describes different online tools teachers can use to create quizzes.
Good collection of resources about using Diigo - check links on left to easy-to-read overviews, classroom ideas (lesson plans, training videos), and other resources. Start with Diigo 101 and Social Bookmarking and Diigo. From the About link, you see that this website (Google site) was created by a group of graduate students for a course, but they appear to have done a great job!
"Short guide to using backchannels for increasing participation in classroom discussions and for informally assessing your students' knowledge." Created by Richard Byrne. Gives detailed instructions on TodaysMeet, Wallwisher (now renamed to Padlet), and Socrative.