When you first install a WordPress site, there are quite a few settings to change before you can start to style and enhance it. These settings will typically be the same for every WordPress site you want to create.
You will need a number of plugins and tools to follow a course with me. I will outline these later. But to begin with, the first tool you need is your browser. It is best to use Google Chrome or Brave.
You can take this idea one step further if you wish. It is entirely optional and you do not have to do this if you do not want to.
However, if you know you will have a large number of sites to build in the future, you may want to create a "perfect" initial WordPress site that you can always use as a starting point for the next new WordPress site.
The idea is tailor a WordPress site with some initial settings, and then have that site always ready to use as a starting point for any new sites you create. This is what I do and I call it the Bootstrap site.
I bought a domain name similar to brandnew.website. I didn't care that the domain was not a .com - in fact it could have been anything. If you are going to do this, buy a cheap domain name.
I then make use of sub-domains. So the bootstrap site will live permanently at bootstrap.brandnew.website, and the next site I build for say, an affiliate site for dog products, could be temporarily at dog.brandnew.website.
To get the dog.brandnew.website site started I would copy the bootstrap site to it, using the free All In One Migration plugin with the Google Drive Extension. That way I do not have to do all the tedious setup every time. I would continue to develop the dog site in that sub-domain location until it is ready for launch.
Once the dog site is ready, I would migrate it to its proper domain name say bigdogblog.com from dog.brandnew.website, again, using the All In One Migration plugin.
Many hosts provide staging sites, so that you always have somewhere to work on a site without having to work on the public facing main domain. Of course you can do that instead. As long as you have somewhere to keep the bootstrap WordPress site, and as long as you keep that site updated, you can organise your workflow however you choose.
Try to use either the Google Chrome browser or the Brave browser. The reason I recommend Google Chrome or Brave is because you will need access to a handful of Google Chrome extensions and these are not always available to other browsers.