Sobre Java

• Effective Java
• The Java Language & Virtual Machine Specification
• Introdução à Arquitetura e Design de Software
• Java Generics and Collections
• Java Concurrency in Practice

Sobre Android

• The Busy Coder's Guide to Android Development
• Dominando o Android
• Pro Android 5
• Android Basics Nanodegree e Android Developer Nanodegree, da Udacity

Sobre Gradle

• Gradle for Android & Java, da Udacity (incluído no Android Developer Nanodegree)
• Building and Testing with Gradle
• Gradle: Beyond the Basics
• Gradle Recipes for Android

Sobre Testes

• Pragmatic Unit Testing in Java 8 with JUnit
• TDD Desenvolvimento Guiado por Testes

Sobre Git

• Pro Git

Sobre Linux

• Guia Foca Linux
• Linux from Scratch

Sobre Networking

• Architectural Styles and the Design of Network-based Software Architectures

Sobre Agile

• Scrum Guides
• A Startup Enxuta
• Learning Agile: Understanding Scrum, XP, Lean, and Kanban

Sobre Criptografia & Segurança

• Crypto 101