Here are a variety of helpful computer tutorials.

General/Windows
All files are downloadable PDFs. 

Computer Basics

Computer Basics 2

Computer Basics 3

Internet Basics

Email Basics

Printer Basics

Gmail and Google Drive

Dropbox

Word Processing

Skype

Installing Software

Updating Flash Player

Wi-Fi Troubleshooting

Computer Maintenance

Maintenance Plan

Computer Security

More Computer Security

Modem/Router Rebooting

Printer Troubleshooting

More Printer Help

Help For Slow Computer

Flash Drive Basics