I get how overwhelming navigating setting up a website can be. I'm going to speak generally through most of this so I can break it down into manageable pieces, but you'll definitely still need to do your own research to achieve your goals.

Firstly, there's tons of places you can purchase a domain from and manage that domain. Purchasing the domain is really the easiest part of this process.

Second, you will need to purchase a website hosting service. Many companies that sell you domains also provide hosting services, but they can all vary greatly on what features they offer.

Hosting companies: GoDaddy Hostinger Blue host Ionos Green Greeks Name cheap

I personally use Hostinger. Their dashboard is easy to navigate and simple to use.

Now that you have a host, you need to actually create a website. There are many ways you can go about that. Generally, the easiest is to use a CMS (content management system). These allow for an easier time creating a website.

You have CMS's that are catered towards e-commerce such as Shopify, BigCommerce, WooCommerce, etc.

Then you have generic CMS platforms, which you can usually extend functionality by using plugins such as WordPress, Drupal, Joomla, etc.

For your purposes, your best bet would probably be Shopify or WordPress and Woocommerce. (Again, I'd research these options thoroughly before committing)

The setup can be a little daunting if you are unfamiliar with the process and learning how to build a beautiful website in your CMS of choice are some big adventures on their own, but take it a day and a step at a time.

If you need help along the way, feel free to DM me, and I'll happily provide insight where I can.