Where Wizards Stay Up Late: The Origins of the Internet
This book is good if you want a long, detailed history of the ARPANET, the direct predecessor to the Internet. For that, it’s fascinating.
That said, it’s not a casual reader. I’m neck-deep in the Internet every day and am a fan of Internet history, and even I got bored in places.
Still, if you ever wondered just where the Internet came from, this book will answer that question definitively.