This book covers vi, nvi, elvis, vim, and vile

The Topics include:
- Basic editing
- Moving around in a hurry
- Beyond the basics
- Greater power with ex
- Global search and replacement
- Customizing vi and ex
- Command shortcuts
- Introduction to vi clones extensions
- The nvi, elvis, vim, and vile editors
- Summary of vi and ex commands
- Vi and the internet
The examples are quite clear and plentiful.