Certification resources

CompTIA Security+:

• CompTIA Security+ Get Certified Get Ahead: SY0-701 Study Guide  (Joe Shelley)

CySA+:

• TryHackMe Labs
• CompTIA CySA+ Study Guide: Exam CS0-003 (Sybex Study Guide)  (Mike Chapple, David Seidl)
• Certify Breakfast 

AWS SAA:

• freeCodeCamp.org (AWS CCP) 
• freeCodeCamp.org (AWS SAA) 

CCNA:

• NetworkChuck 
• David Bombal Tech