https://www.humblebundle.com/books/cybersecurity-packt-books?please=thetalkinggeek&charity=1827413

$1: Nmap:
Network exploration and security auditing cookbook, 2nd edition
Network analysis using Wireshark 2 cookbook, 2nd edition
Practical cyber intelligence
Cybersecurity attacks (red team activity), video
Python for offensive pentest: a complete practical course, video

$8:
Cryptography with python, video
Digital forensics and incident response
Hands-On penetration testing on Windows
Industrial cybersecurity
Metasploit penetration testing cookbook, 3rd Edition
Web penetration testing with Kali Linux, 3rd Edition
Hands-on cyber security for architects
Mastering pfSense
Mastering Kali Linux, video

$15:
Mastering Kali Linux for advanced penetration testing, 2nd edition
Kali Linux - an ethical hacker's cookbook
Learning malware analysis
Cybersecurity - attack and defense strategies
Practical mobile forensics, 3rd Edition
Hands-on cyber security with blockchain
Metasploit for beginners
CompTIA security+ certification guide
Ethical hacking for beginners, video
Mastering Linux security and hardening, video
Learn website hacking / penetration testing from scratch, video

https://www.humblebundle.com/books/cybersecurity-packt-books?please=thetalkinggeek&charity=1827413