Jörg Hagmann wrote:
Would the beginner's book help in understanding the structure of the whole system?
I have never actually read Levy's book, but I doubt it will help you understand the intrinsics of the ConTeXt system. It will probably teach you how to program TeX; thereby making it easier for you to understand the constituent parts of ConTeXt and (possibly) allowing you to write the macro code needed for nice title pages and overlays. But that's hardly the same as "the structure of the system". At the moment, the only way to get a feeling for that is to read the source code, I believe. Start with 'tex/context/base/context.tex'. Working through the included files in the order they are loaded is easiest, and use the source code browser at contextgarden.net ! Good luck, Taco