The best learning tool Vim can offer is certainly a :help command, as can be seen in the following screenshot:
It's an enormous collection of resources and tutorials which comes installed with Vim. Scroll through using the Page Up and Page Down keys (bonus point for using Ctrl + b and Ctrl + f respectively), there is a lot of useful information there.
Whenever you are stuck, or want to learn more about a particular command, try searching it using :help (you can shorten it to :h). Let's try searching for a cc command we've learned :
Help tells us the way the command works, as well as how different options ...