@Kathy25 , use Search option on the top of the screen, next to your username.
You will find plenty of threads where we discussed videos and books.
Because you are still rookie ( 
) I will make it easy for you right now. 
Books… as mentioned already,
- Jeff Cooper - “Principles of Personal Defense”
- Massad Ayoob - “Deadly Force - Understanding Your Right to Self Defense”
but also these are MUST-TO-READ:
- Massad Ayoob - “In the Gravest Extreme”
- Massad Ayoob & Others - “Straight Talk On Armed Defense”
- Andrew Branca - “The Law of Self Defense” [look always for the latest edition]
Additional books if you are interested more about gear, tactics, habits, etc:
- Massad Ayoob - “The GunDigest Book of Combat Handgunnery, 7th Edition”
- Mark Walthers & Kathy Jackson - “Lessons from Armed America”
- Mark Walthers & Rob Pincus - “Lessons from Unarmed America”
- David Klinger - “Into the Kill Zone”
And of course you have to read these books from USCCA training:
- “Should I Shoot”, Volume 1 and Volume 2
- “Defensive Shooting Fundamentals”
- “Concealed Carry and Home Defense Fundamentals”
- “Countering the Mass Shooter Threat”
I personally value also NRA books and these are great guides for new shooters:
- “NRA Guide - Basics of Pistol Shooting”
- “NRA Guide - Basics of Personal Protection Outside the Home”
- “NRA Guide - Basics of Personal Protection Inside the Home”
These 16 books we everything I needed to get enough knowledge to be safe, feel safe and create comfort zone for me and my Family.
As I have mentioned, if you combine the knowledge from these books with continual training and home
dry fire you will become “Somebody” and will never be “Nobody” again. 