Your tutorial shows how to install WordPress on a server, but can you install it on local computer?
Yes, you can install WordPress on your local computer. But first, you’ll need to install some additional software to create a local web server on your computer. Then, you can install WordPress on your newly-created local web server.
This article from the WordPress codex outlines the steps to do so:
If you’re using a Mac, there is a much easier method. Pressmatic is a piece of software that bundles all the required components into a single application, making it a breeze to easily install WordPress on your own computer:
Hope this helps!