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It's good to see a book out that caters to users with absolutely no Java experience, but doesn't ignore the JSF-related technologies that are used in the real-world, namely Facelets and JBoss Seam. However, I would classify this book more as a starter book on using Eclipse, RichFaces, and JBossTools rather than a book about the essentials of JSF, Facelets and Seam.

What is the base for this conclusion? What do you think is missing?

By evaluating the two free chapters, this book looks more introduction to JSF development with Eclipse. It lacks details information about JSF life cycle (which is crucial when using JSF and Seam), component model, etc.
I will recommend this book for beginners to have a quick look of JSF development.

This is untrue. The life cycle phases are explained in chapter two (pages 49-55). Did you read that chapter at all or simply skim through the section headings?

JSF component model is not cover because it is far more practical and common to use Facelets to create new components.

kt84732,
I'm not intend to minimize your work but IMHO, for a beginner it is somehow too essential about the life cycle and from my own experience, understanding well this cycle will make use of JSF much easier. For someone that use to work with component base web framework it may be enough.