"Appointment Slots" didn't come up in any searches. This should be included in Google Calendar training. It has many uses, such as for advisors to schedule appointments with advisees, for trainers to schedule one-on-one coaching, for faculty to schedule open office hours, and more. It would be nice to show both ends--how the user creates and shares appointment slots, as well as how people can select and claim a slot.
Training on how to use Omeka would be nice. This is an industry standard CMS in Digital Humanities and is similar to WordPress. We've got a project starting up this spring that will use it.
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Gmail looks very different on an ipad than it does on a computer, and how it handles and prints items is not as intuitive. Could there be a series on Google for ipads?
Since they are a Google school it would be super easy to push that through to each student.
Skydrive is a great product to combine email, cloud based document storage, and Microsoft Office web apps. I know that web apps tutorials already exist, but a tutorial on how to create a Skydrive account and upload files would be great.