Official from AWS:
AWS Certified Solutions Architect – Associate
Exam Prep: AWS Certified Solutions Architect Associate

Stephane Maarek on Udemy:
Ultimate AWS Certified Solutions Architect Associate 2022

Show: AWS Power Hour: Solutions Architect Associate on twitch.tv
AWS Power Hour: Architecting | S1 E1 (Adam and Eric) | Resilient Architectures>
AWS Power Hour: Architecting | S1 E2 (Adam and Eric) | High-Performing Architectures
AWS Power Hour: Architecting | S1 E3 (Adam and Eric) | Secure Applications and Architectures
AWS Power Hour: Architecting | S1 E4 (Adam and Eric) | Cost-Optimized Architectures
AWS Power Hour: Architecting | S1 E5 (Adam and Eric) | Review Time
AWS Power Hour: Architecting | S1 E6 (Adam and Eric) | Practice Makes Perfect