The cert might be a good thing to aim for, but if you could specify what exactly you want/need to learn how to do. we could probably give more detailed information
[0] learn.cantrill.io
For my short term concerns, I want to migrate one of my applications off of Firebase. Primarily just dealing with our primary DBs, user auth, and object storage. I understand how AWS can easily fulfill all of this, but no clue how to get all of that orchestrated.
In general, I'd like to know more about this type of architecting simply because it interests me, and I want to be able to build the tools I imagine without being hampered by how to host DBs, event queues, etc.
Avoid Dynamo unless you understand it. It will be like firebase but 10x worse, if you get it wrong, there are 2 great aws conference talks on youtube about it, and a great book out there. Its really its own subject, great when you use it right, and absolute nightmare any other way.
Object storage with s3 is pretty simple, turning on cloudfront for cdn is also easy.
I have AWS experience, if you would like to do a consultation to talk it over, my email is in my profile. I don't really have the bandwidth to take on another project right now, but can provide some advice.