The canonical site for this set of lessons is https://2017-lapaz-assembly.readthedocs.io/.
These lessons were developed and tested on EC2 using Ubuntu 15.10; the image was ubuntu/images/hvm/ubuntu-wily-15.10-amd64-server-20160222 (ami-05384865) on us-west (California).
We ran this on m4.large instances with 2 CPUs and 8 GB of RAM.