vi and Vim Editors Pocket Reference
Arnold Robbins
We Have Root
Bruce Schneier
Elasticsearch: The Definitive Guide
Clinton Gormley & Zachary Tong
Please Don't Feed The Bears
Asbjorn Jntonsus
The 5 AM Club
Robin Sharma
Leaders Eat Last: Why Some Teams Pull Together and Others Don't
Simon Sinek
Graph Algorithms
Amy E. Hodler & Mark Needham
Quick Start Guide
John Schember