This book lays out a nice set of guidelines for the aspiring technical writer. A lot of the advice in here was common sense to me, but a good amount of the advice being given was niche too (I hadn't seen it before! Eye-openers!). I read the 90s version of the book. I don't know if it went through a revision or not. That may be something to consider when you're picking the book up. At any rate, even though some of the advice inside the book has aged, it's still sound.

However, I'll admit that a fair amount of the 'rules of thumb' embedded in the book aren't 100% representative and self-evident. I mean self-evident in the sense that the advice doesn't hold true across all situations. Some of the style choices they emphasize are merely personal taste. When I reached these sections of the book I just kind of cherry-picked what sorts of guidelines I felt aligned closely with my stylistic choices. I didn't have a problem doing this as the atmosphere generated by the writers of the book was neither vindictive nor preachy.

A good reference book to keep in your desk area. 5/5 is my verdict.