This site https://aws.amazon.com/certification/certified-solutions-architect-associate/ has everything you need to get started, I would highly recommend that you download the exam guide and the sample questions.

I used a number of online resources to help me study.

–A cloud Guru – This was a good intro, but wasn’t great for the hands-on labs.

–Linux Academy – Trial is available – The content was good, the labs were also good.

–Udemy – https://www.udemy.com/course/aws-certified-solutions-architect-associate-saa-c02/ – This was probably my favorite instructor and content – I followed along with the labs in my own personal AWS account, SAA-C01 and SAA-C02 are both covered and I really like how he labeled and tagged the course content and quiz questions as being specific to each exam format.

https://www.certmetrics.com/amazon/public/badge.aspx?i=1&t=c&d=2020-06-25&ci=AWS00480907