To get a sample installation up and running real fast you can use CloudFormation, just follow one of the links below.
Make sure you know your SSH keyname for the appropriate region and enter it correctly.
This CloudFormation template will create a single EC2 instance that has Cattle installed and it will register itself as a docker and libvirt hypervisor. Once the installation is done, which could take 20 minutes, the UI and API will be accessible at http://ec2-XX-XXX-XXX-XX.us-west-1.compute.amazonaws.com:8080/v1.
You can log into the server by running ssh similar to below
ssh -l ubuntu -i mykey.pem ec2-XX-XXX-XXX-XX.us-west-1.compute.amazonaws.com
The installation log is at /var/log/cattle-install.log. If everything ran successfully you should be able to run cattle list-host and see two hosts registered, one for Docker and one for Libvirt.