====== Ghost in the Wires (Book) ======
Author is Kevin Mitnick, a famous computer hacker / social deception expert.
Story of his experiences growing up, hacking phones, radios, and getting access to organizations through social deception. Really clever guy, claims at one point he was the worlds most wanted computer hacker. 

One fun thing the book does is start each chapter with some encoded text, a puzzle to solve. 
So far I've only solved the first chapter, it's a Caesar cipher, basically a rotation where you encode each letter as a number in the alphabet, and then determine the rotation to decode it.