These playbooks demonstrate the different modules contained in this collection. The naming should be rather obvious. The only special playbook is full.yml. As the name suggests, it runs all the playbooks contained in this folder.
To get started, inspect ../vars/auth.yml. You need to set up a local site, just as described, or provide the details to an existing site. Do not use a productive site here!
Once the prerequisites are met, you can run the playbook with the inventory provided at ../hosts:
# You need to be in the project root for this to work!
cd ../../
ansible-playbook -i playbooks/hosts playbooks/demo/full.yml