A Practical Guide to Networking and Security in iOS 8
Glenn Fleishman is probably not a stranger to most of you. Many of you probably know him from his work on The Magazine, but he also has a great book about getting the most out of your Apple Wi-Fi network that I recommend to friends.
Recently, he published a A Practical Guide to Networking and Security in iOS 8. In the book, he covers everything you need to become a networking and security ninja on iOS. It includes Wi-Fi troubleshooting, personal hotspot, file transfer using AirDrop, VPNs, cellular data management, and much more.