Complex sentence: The book is an update to Lessig's book "Code and Other Laws of Cyberspace", which was written in response and opposition to the notion that state governments could not regulate cyberspace and the Internet.
Split into simpler sentences: The book is an update to Lessig's book Code and Other Laws of Cyberspace. The first edition of this book, Code and Other Laws of Cyberspace, was written in response and opposition to the notion that state governments could not regulate cyberspace and the Internet.