First impression: not sure yet, could be good, could be cut and pasted from the Wolfram documentation. ( Aren't most computer books written like that? ) As is the case with all programming books, once you are profound in a language, books seem redundant because you can basically dream the manual anyway. The Manual. Oddly enough, books, ( including manuals ) aren't popular among those who are still learning a language ( or should I say platform ).