Android Design Patterns: Interaction Design Solutions for Developers
Greg Nudelman
Docker Up & Running: Shipping Reliable Containers in Production
Sean P. Kane & Karl Matthias
Learn Java the Easy Way: A Hands-on Introduction to Programming
Bryson Payne
Linux for System Administrators: Navigate the Complex Landscape ...
Viorel Rudareanu & Daniil Baturin
Linux Notes for Professionals
GoalKicker.com
SQL Notes for Professionals
MySQL Notes for Professionals
PostgreSQL Notes for Professionals
Git Notes for Professionals