Rating: 

Chapters one to four are the meat and potatoes of the book. Those four chapters are a quick read at 52 pages long. Take it with you to the laundrymat. It definitely beats watching the spin-cycle. With it, you'll be able to effectively get your job done.

For flair, to flaunt your stuff in front of your co-workers, and to just kick-butt on onerous amounts of code and data changes, you need to read chapters 5: "Introducing the ex Editor"; 6: "Global Replacement"; and 7: "Advanced Editing".

Lots of great examples. If you don't have a copy of this book--you're wrong.

Enjoy REAL editing power! vi rules! Viva vi!