Basic iPad Usage.
The OS in this video is older, so the interface may be a bit different, but the information is good.
Office Apps
These videos will walk you through using the Office 365 Apps.
Google Apps
These videos will walk you through using Google Apps such as google doc, sheets, and slides.
Office for iPad - Fundamental Training
Introduction
Word:
Excel:
PowerPoint
Google Mobile Apps Training
Introduction
Docs
Sheets
Slides