I have been busy training new staff at my schools. We are a Google district, so Google Apps for Education (GAfE) is an important topic.
My main resource is this one-page guide (screenshot is above) that hyperlinks to a variety of visual how-to guides.
As I was prepping for a presentation this morning I came across this fantastic Chrome Extension, Training for Google Apps. While you are using a GAfE product, you will see an icon pop up showing you product specific trainings (icon is below).
|Training for Google Apps Icon|