Ultralearning
Scott Young
Joe Celko's Data, Measurements and Standards in SQL
Joe Celko
Organizing From the Inside Out: The Foolproof System for Organizing ...
Julie Morgenstern
Joy at Work: Organizing Your Professional Life
Marie Kondo & Scott Sonenshein
Clean Code
Robert C. Martin
Agile Estimating and Planning
Mike Cohn
Working Effectively with Legacy Code
Michael Feathers
Practical Object-oriented Design in Ruby
Sandi Metz
The New Drawing on the Right Side of the Brain
Betty Edwards
Making It All Work
David Allen
Growing Object-Oriented Software, Guided by Tests
Steve Freeman & Nat Pryce
Joe Celko's SQL for Smarties
Eloquent Ruby
Russ Olsen
LMMS
David Earl
The Chimp Paradox
Steve Peters
Fluent Forever (Revised Edition)
Gabriel Wyner