I'm almost done with this so I figured I'd rate it now.
I hesitated reading this for a long time because I stay away from flying in any serious weather and I was worried about how up to date the information is.
This book of course, is a classic and constantly recommended as one of the 5 flying books you have to own. I can't disagree.
The good: The information in this book has been updated. He mentions the Internet and GPS. The fact that he's flown since the DC-3 days adds a lot of weight to what he says. I learned a lot about weather, how to read it and what to do about it and it's made me want to study the weather more. hH doesn't leave any type of flying out. He tells you what you need to know if you're flying a 172 all the way up to a 747. As a matter of fact, his favorite plane right now is a glider!
Oh yeah, and it's entertaining!
The bad: Well, not too bad. Some of his weather explanations went over my head. Also, even though he mentions the west several times, a lot of his explanations are about weather in the northeast. I also think more specifics on how to check the weather would be nice. I think he's seen so many changes that he tries to leave it more general.
If you're a pilot, just buy the book. You know you will eventually.