Linux Pocket Guide
Flask for Real Projects: A Hands-On Guide to Building Modern Python Web Applications is excellent, both technically and commercially
Clean Code: A Handbook of Agile Software Craftsmanship (Robert C. Martin Series)
The Linux Command Line, 3rd Edition: A Complete Introduction
The Ghidra Book: The Definitive Guide
The Cold Start Problem: How to Start and Scale Network Effects
Software Engineering at Google: Lessons Learned from Programming Over Time
Agile Practice Guide