Installing additional modules with ansible-galaxy
Most of the time when you work with collections, you won't be building them yourself. There are already 780 available on Ansible Galaxy at the time of writing and, there will probably be many more by the time you read this book. Nonetheless, it is the author's personal belief that we all learn better when we can get our hands dirty, and thus, developing our own, albeit simple, collection was a great way for us to look at how they are put together and how they are referenced.
However, let's focus now on finding and then working with pre-existing collections on Ansible, as this is where your focus is likely to be most of the time. As we have already mentioned, the Ansible 4.3 package includes a set of collections for you to begin your automation journey with, along with the ansible.builtin collection included with the ansible-core package.
If you want to see which collections got installed when you installed Ansible...