Books to check out:

• Social Engineering: The Art of Human Hacking by Chris Hadnagy
• Unmasking the Social Engineer by Chris Hadnagy
• Phishing Dark Waters: The Offensive and Defensive Sides of Malicious Emails by Chris Hadnagy
• It’s Not All About “Me”: The Top Ten Techniques for Building Quick Rapport with Anyone by Robin Dreeke
• The Code of Trust by Robin Dreeke
• What Every Body is Saying: An Ex-FBI Agent’s Guide to Speed Reading People by Joe Navarro
• Three Minutes to Doomsday: An Agent, A Traitor, and The Worst Espionage Breach in U.S. History by Joe Navarro
• Louder Than Words by Joe Navarro
• Open Source Intelligence Techniques by Michael Bazzell
• How to Make People Like You in 90 seconds by Nicholas Boothman

Courses to check out:

• Advanced Practical Social Engineering Training via Social-Engineer.com
• Masters Level Social Engineering Training via Social-Engineer.com
• Advanced OSINT for Social Engineers via Social-Engineer.com

Certifications to check out:

• Certified Ethical Hacker (CEH) via EC-Council
• Social Engineer Pentest Professional (SEPP) via Social-Engineer.com
• Offensive Security Certified Professional (OSCP) via Offensive Security
• Certified Penetration Tester (CPT) via IACRB
• Security + via CompTIA
• Certified Information Security Manager (CISM) via ISACA