Reddit reviews Learning Java: A Bestselling Hands-On Java Tutorial

In the interim, I suggest the following books:

• Digital Design and Computer Architecture, by Harris & Harris - covers the circuitry & hardware logic used in computers. Should also cover how data is handled on a hardware level - memory's a bit rusty on this one, and I can't find my copy of it right now. Recommend that you read this one first.
  
  
• Computer Organization and Design, by Patterson & Hennessy - covers the conversion of system code into assembly language, which itself turns into machine language (in other words, covers the conversion of programs from operating system code into hardware, "bare metal" code). Knowledge of digital circuitry is not required before reading, but strongly recommended.
  
  
• Operating System Concepts, by Silberschatz, Galvin & Gagne - covers all the basic Operating System concepts that each OS today has to consider and implement. While there are Linux-based ones, there are so many different Linux "flavors" that, IMO, a book that covers a specific Linux base (called a Linux kernel) exclusively would be incomplete and fail to address all the key aspects you'll find in modern OSes. Knowledge of coding is required for this one, and therefore should be read last.
  
   
  
  As for the coding books, I suggest you pick one up on Python or Java - I'm personally biased towards Python over Java, since I think Python's syntax and code style looks nicer, whereas Java makes you say pretty much everything you're doing. Both programming languages have been out for a long time and see widespread usage, so there's plenty of resources out there for you to get started with. Personally, I'd suggest going with this book for Java and this book for Python, but if you go to Coursera or Codecademy, you might be able to get better, more interactive learning experiences with coding.
  
  Or you can just skip reading all of the books I recommended in favor of MIT's OpenCourseWare. Your choice.

I learned Java in the late 1990s from the first edition of Learning Java and also some of the official online tutorials. I just fooled around with it a short bit. I relearned Java some years later from Head First Design Patterns and Effective Java. The Patterns and Effective books really help you design your classes. Ps: I know nothing about Android programming.

I've always found Derek Banas to be pretty good link. This book is pretty decent too, it's slightly out of date (Java 7) but still good imo.