The Imposter's Handbook: What Is It?

Decades as a self-taught programmer... there are so many things I didn't know! I decided to change that in 2014 and I spent a year studying the fundamentals. Then I wrote some books about:
Data Structures , Algorithms and Big-O
Computation and Machines (Turing, Push Down, etc)
Complexity Theory
Lambda Calculus
Programming Patterns and Principles
Functional Programming Basics
Essential Unix Skills
Binary, Bitwise and Logical Operations
Encryption and Hashing
Cryptocurrency and Blockchain