When I first wanted to buy this book, the reviews weren't that helpful. Alot of issues with mistakes and proof reading. My background is one of electronics, I have over 100 semester hours in electrical engineering from a major college. So before you buy this book, let me point out some things.
First, this isn't an introductry book for electronics, If your looking for a guide buy something else I highly recommend The Art of Electronics Anyway back to the review:
This book covers several items which I spent several years learning in college all 4 years. It is filled with integration, and other wonderful calculus and physics formulas. If you are afraid of upper level math, don't buy this. It goes WAY beyond introductry courses,and will not explain how or why.
On the other side of the house. If you have a background in Electronics, heavy in theory. If you are alittle rusty or just trying to revive those long dead brain cells, this book is excellent. Yes there are a few mistakes, but as your working the problem, its very easy to spot, missed decimal places etc. I'm currently using this book to prep for the US Postal Electronics Tech Test. I anticipate this will cover everthing I need, with the exception of number conversions, binary to decimal etc. That might be covered, but first glance I didn't see it.
So in summary, if an Integration sign scares you, or If you have watched "Good Will Hunting" and have never seen the symbols he writes on the mirror, or have never heard of Kirchhoff,vectors, Thev Eq, or even Ohms Law don't buy this. If you have seen or done the above, your pretty safe.
I hope this helps.