Here is the list of resources I have used to prepare for my AWS Solutions Architect.
I will be breaking them down by services so that it is easier to understand and more manageable. Additionally, I have attached extra resources as well.
I have used the following link https://learn.cantrill.io/ to study for the training, and it was really good. The instructor breaks down concepts in a very simplified way, which I really enjoyed. I would highly recommend this training.
I also used this platform for my mini projects. I think the projects they provide are very useful and definitely worth trying.