The Ray Tracing in One Weekend series of books
Klotsky class block slider puzzles.
Powerful framework for rogue access point attack
WebSploit is a high level MITM Framework
WiFi-Pumpkin - Framework for Rogue Wi-Fi Access Point Attack
Crack WPA Wi-Fi routers with Airodump-ng and Aircrack-ng Hashcat
Infernal Wireless Penetration Testing Suite