Jump Start PHP Environment
Bruno Škvorc
Kali Linux Web Penetration Testing Cookbook, Second Edition
Gilberto Najera-Gutierrez
Philosophy 101
Paul Kleinman
Learning PHP, MySQL & JavaScript
Robin Nixon
Distributed Systems Principles and Paradigms
Andrew S. Tanenbaum & Maarten van Steen
UNIX and Linux System Administration Handbook
Evi Nemeth & Garth Snyder & Trent R. Hein & Ben Whaley
C Programming Language
Brian W. Kernighan & Dennis Ritchie