The AWS tutorials are focused on topics mostly specific to AWS services, such as workmail, and how to install or configure EC2 servers. AWS stands for Amazon Web Services, and is a collection of different services available in "The Cloud".
Installing a server in EC2 is very simple, and does not differ much from installing a standard Linux distribution. Once you have a server up and running, it is typically the same commands that you would use on a normal installation.
The official documentation is also a good place to find help, and it also covers some of the same topics.
Services like those offered in AWS are really wonderful, because it brings professional-level capabilities in the hands on even hobbyist web developers. The potential for us to be successful with our project is huge, and we are no longer limited by what shared hosting sites offer. This is also why Beamtic is currently hosted in AWS. Admittedly, we have not really tried anything else yet, and other cloud services are likely also fine. But, we have been very happy with AWS so far.