After figuring out Ansible work I started using it to manage several personal VPS machines and the various boxes at home.
I just used the Ansible docs, which are pretty good.
Just start a simple project with Ansible and have a look at the repositories using Ansible to install Docker and deploy containers on your host afterwards.
You may want to put some effort (not that much) into managing your credentials with Ansible Vault[0] and you can try your playbooks e.g. on a Vagrant Machine[1] before applying them to a real host.
Any tutorial will do for the beginning but you should always notice what version of Ansible you are using (vs. the one used in the tutorial) as features change and also there have been some changes to the syntax to improve readability of your playbooks.
