Hey there!
I don't have enough words to describe what this book is! Where should I start? The book is perfectly structured! The way Scott Spencer is explaining is not dumbed down like you see on some learning sources, but in the same time is clear as tear drop. He is not wasting any word, instead he manages to touch upon every aspect you might think of. While reading some chapters, certain questions were poping in my mind, but every and each of them were answered eventually later in the book.
The videos are made in the same manor. Clear, on spot, supporting you with everything he can (models, Ztools, reference images, proportions literately drawned by him ready for you to take them into Maya or Zbrush with you while you build your base mesh and many many more).
All in all, I must reiterate this, it is the bible you need when you start learning Zbrush and modeling. It is a resource that you will use to start with and, I'm sure, you will get back to later on just to use as a reference to whatever you might sculpt.
Now, the DVD issue. I know some people complained about Sybex quality on the DVD... I share your opinion in some way but I found a solution and it worked for me without any problem. Here is what I did: Inserted the DVD, opened the autoplay, clicked on Chapter 1 which opened a window with the files allocated for the given chapter. I selected them and copied in a folder on my hard disk. After this, I did the same with everything. When I was done copying all of them, I extracted the files on every chapter and there it was: good to go and being on my hard there was no waiting time what so ever. I saw some guy complaining about the sound... There is no sound issue! So if you find this problem than it has to do with your codecs (TIP: use VLC player since I find it to have a higher max volume than BsPlayer or Windows Media Player. Usually at 60% in VLC is louder than 100% in BsPlayer.).
The last bit, I recommend everything Scott Spencer did. I also got his other 2 books and they are the same. Start with this one since this is the foundation you need in sculpting and than move ahead and continue with the other 2 books. On top of this, if you can find his Zbrush 4 Introduction from Gnomon Workshop you won't regret. I watched it quite late, after I was already quite familiar with the program and it still showed me quite a lot of things I didn't know.
The only problem I have? A negative side of what Scott Spencer did? He has only 3 books out... He is only one...
P.S: Subjects touched in his books that I could not find in other resources or I couldn't find a decent way to understand them:
DISCLAIMER: This is from a personal point of view, and from what I searched so if there are other sources I didn't manage to get to feel free to correct me.
1) UV mapping - Character Creation: Advanced Digital Sculpting
2) Normal Maps, Displacement Maps, Texture maps and Uv Master in ZBrush - Character Creation: Advanced Digital Sculpting
3) Topology and remeshing in Zbrush - ZBrush Digital Sculpting Human Anatomy
4) A well structured path from easy to complex when it comes to Anatomy, Body Landmarks and Anatomy terminology in sculpture - ZBrush Digital Sculpting Human Anatomy
5) All the proportions across the body you will ever need in humanoid sculptures and even in creature developing - ZBrush Digital Sculpting Human Anatomy
6) A logic way of explaining STRUCTURE and why is so important (or in other words, how to avoid a lumpy look when you sculpt) and the other two most important considerations when sculpting: Gesture and Proportion - ZBrush Digital Sculpting Human Anatomy
7) Small techniques that are implied in various places but no one is bothering with explaining them in an elaborate manor and even further, demonstrate their utility - ZBrush Digital Sculpting Human Anatomy
And many many more!
I hope you enjoy the book as much as I do! Happy Sculpting!
Regards, Dan Mihaila