There are some useful points in this book and plenty of good advice, but the format of the book means it doesn't work well as a cover-to-cover read. Reading endless lists can get tedious, especially since the entire book is formatted that way.
Each section of the book is split into a list of 25 writing tips, each one pertaining to a certain aspect of writing - worldbuilding, for example, or publishing, or writing for particular genres, such as Horror. The lists are also interspersed with Chuck's own brand of humour - which probably wouldn't be for everyone and again, definitely gets tedious when you're reading it for pages and pages at a time. There are only so many jokes about bestiality and getting high off printer ink that I can handle, and after a certain point it started to get irritating. Don't get me wrong, I understand the reasoning behind it - intersperse your advice with humour to keep the reader interested, and on their toes. It makes sense, but unfortunately didn't work particularly well with the format, and the jokes started to seem kind of repetitive after a while.
The most useful part of this book for me was the section that talked about different methods of publishing. So many writers seem reluctant to talk about the process of getting published, but Chuck went in-depth into all the subjects that strike fear into a writer's heart (or this particular writer's heart, in any case.) Agents! Query letters! Marketing! Rejection!! Crowdfunding, self-publishing, social media - this was the kind of information I wanted and I can imagine I'll return to the book quite often to reread this segment, as it was the most interesting to me - and also the most useful.
Writing as a craft is difficult to teach, and something that's hard to learn without doing. I respect Chuck's attempt to give writing advice in this way, and he definitely had some valid points, but the format spoiled it a little for me. I'd recommend reading this in chunks, as and when you need advice on certain aspects of writing, rather than reading it cover to cover the way I did.