Complex sentence: The book, which is subtitled "You can and must understand computers NOW," and which Nelson says in the 1987 edition was inspired by Brand's Whole Earth Catalog, is a spirited manifesto that was inspiring to a generation of DIY computer-lovers.
Split into simpler sentences: The book, which is subtitled "You can and must understand computers NOW," was inspired by Brand's Whole Earth Catalog. It is a spirited manifesto that was inspiring to a generation of DIY computer-lovers.