We're working on our first novel, and we want to track our changes in Git. But
We're working on our first novel, and we want to track our changes in Git. But first, we need to change into the directory where our text files are. Using this shell prompt, change into the novel directory.
You didn't even ask a question...
I can only guess at what you are trying to understand. Is it just the first task? In the video they explained how to navigate directories. So if the task says change into de 'novels' they mean you should write the following command in the console: 'cd novels'. This simply is because you could have multiple repositories on you computer. A specific repository is only usable from within it. That's why you really need to navigate to the (repository) directory.
Maybe this helped. Succes.
Kind Regards, Theo
PS see also the preceding video around 0:25 seconds.