The Linux Command Line, 2nd Edition
William Shotts
The Hardware Hacker
Andrew Bunnie Huang
Serious Cryptography
Jean-Philipee Aumasson
AD&D 5th Edition - Xanathar's Enemies and Allies
Dungeon Master's Guild Adepts
AD&D 5th Edition - Wayfinder's Guide to Eberron (v3)
Wizards of the Coast