Agile Web Development with Rails 5.1
Sam Ruby
SQL Antipatterns
Bill Karwin
Effective Ruby
Peter Jones
Religion - Ruining Everything Since 4004 B.C.
Zach Weinersmith
Clean Code
Robert C. Martin
Rake Task Management Essentials
Andrey Koleshko
Practical Object-oriented Design in Ruby
Sandi Metz
Joe Celko's SQL Programming Style
Joe Celko
Agile Estimating and Planning
Mike Cohn
Working Effectively with Legacy Code
Michael Feathers
Joe Celko's Analytics and OLAP in SQL
Cost-Based Oracle Fundamentals
Jonathan Lewis
The Art of Agile Development
James Shore & Chromatic
Joe Celko's Data, Measurements and Standards in SQL
Growing Object-Oriented Software, Guided by Tests
Steve Freeman & Nat Pryce
Refactoring
Jay Fields & Shane Harvie & Martin Fowler & Kent Beck
Joe Celko's SQL for Smarties
Continuous Delivery
Jez Humble & David Farley
Eloquent Ruby
Russ Olsen
LMMS
David Earl
Joe Celko's SQL for Smarties 5th edition
Practical Object-Oriented Design Second Edition
Practical Object-Oriented Design
Pro Oracle SQL Development
Jon Heller
Agile Web Development with Rails 6
Sam Ruby & David B. Copeland & Dave Thomas
Head First Git
Raju Gandhi
Head First Java
Kathy Sierra & Bert Bates & Trisha Gee