Here is a good place to start https://www.youtube.com/user/professormesser

can't speak to books, i just picked the best seller on amazon

You can look it

https://github.com/erbilnas/humble-book-bundle/tree/master/Cybersecurity%20presented%20by%20Wiley

https://github.com/alexanderstonec/Top-100-Hacking-Security-E-Books-Free-Download-2019

Social Engineering: The Art of Human HackingAll of your security infrastructure is meaningless if I can call Suzy in Accounting and ask her for her password.

TCP/IP Illustrated, Vol. 1: The ProtocolsYes, I know this book is old. This book is the Mutha-Fecking 1969 Camaro 454SS of networking books.It simply NEVER goes out of style.

Wireshark for Security Professionals: Using Wireshark and the Metasploit FrameworkIf you don't have a basic understanding of Wireshark and Packet Analysis, you're useless to me.You don't have to be a wizard. You don't have to look at the Matrix and see Blondes or Red Heads. But you MUST possess a clue.I have no specific love for this book. Just pick any good looking Wireshark book writen for an InfoSec audience.

DNS and BIND (5th Edition)The author "Cricket Liu" is THE DNS guy. He literally wrote the book on DNS.

Designing for Cisco Internetwork Solutions Foundation Learning Guide: (3rd Edition)The Cisco CCDA track will teach you focus on technical requirements, and aligning network functionality to match those requirements. Data Networking is CRITICAL knowledge to InfoSec professionals. But you might find this an easier starting point than CCNA.