1. The simple answer is no. There are several other books that deal with the subject of creating a website from scratch. I'd be happy to recommend you a couple of them if you want to. This book assumes a knowledge of how to do this already.
2. In this case, yes. We discuss developing for an audience that may be using any kind of browser, and there is an entire chapter dedicated to accessibility in particular. Both of these subjects are mentioned throughout the book though, as they are something that a CSS author should always be taking into consideration.
