This book was, overall, pretty good at allowing
someone to "Learn the vi Editor". If you know
a lot about vi already, then it's pretty tedious
reading through the easy stuff. I read it cover
to cover just to find little gems that I didn't
know about. And they were there. Particularly
with some clever usage of the ex editor (vi's
underlying ancestor). I liked the concept of
the examples, but sometimes they were kind of
cryptic - like "what if you want troff codes on
every line". Ok, great. I don't use troff.
But I'm glad I read through it. I feel I
understand my beloved editor much better as a
result.