I taught some courses on AWS for a year and a half. The networking piece is something that is trivial for any network engineer, but for any developer (which is my background) working through the network piece is crucial. It takes a while and this looks like a good reference. However, it's best to also check out the AWS docs https://docs.aws.amazon.com/vpc/latest/userguide/what-is-ama... . They are not always the easiest read, but I find them to be pretty authoritative.

I also like this video https://www.oreilly.com/library/view/amazon-web-services/978... (part of http://shop.oreilly.com/product/0636920040415.do ). Full disclaimer, I used to work with Jon.