Tubes

You might not think about it — in fact, you're probably even less inclined since the advent of Wi-Fi and cellular data — but the Internet that keeps a big chunk of society functioning is actually a huge, world-spanning networks of routers, wires, and other complex gadgets. Tubes: A Journey to the Center of the Internet ($17) takes you on a tour of these places, from massive data centers and historical spots to caverns full of wire and the ten-thousand-mile undersea cable that connects Europe and Africa. A must-read for anyone who spends the majority of their day online — so basically everyone.