AWS Docs, 30 minutes: https://docs.aws.amazon.com/ Read more about IAM in Amazon docs. I wish I had discovered docs a little sooner. A veritable treasure trove of useful and practical information.
Adrian Cantrill’s SAA-C02 training: https://learning.cantrill.io Finished up with IAM section today. Though there is more to do, I have a good handle on the basics and will return to reinforce before the exam.