Everything that has to do with being self-sufficient in the modern world implies internet access¹.

The most important thing one has to do if they are to expose their things into the internet is a domain name.

A domain name is a human readable address that points to a server. For example, if a server has a public address of 74.125.142.100, then you could link that address to your domain, so that people who use your domain in a browser could get to the server you own or rent.

Intuitively most people know what a domain name is, but don’t know that you can get one.
A common example to illustrate how domain names work is using Google.
Google uses a server with address 74.125.142.100, and the domain name linked to that address is google.com.
Putting 74.125.142.100 takes you Google, just as google.com

There are many domain name providers, like GoDaddy, PorkBun, or others. A good rule of thumb is to check multiple providers; typically providers from the country of origin are cheaper (for example, in Greece, a good option is Papaki).

In most cases the domain provider can help you stay anonymous by blocking whois (an authentication system for domains), and presenting themselves as the domain owner. It is adviced for anonymity, to enable the service

The process is extremely simple. You make an account, and look up a domain name you want, and rent it.

It might be difficult to find a good domain name. Most domain names that are legible are already rented. There is a way to make money off of domains called ‘domain flipping’, where you rent domains for cheap and then auction them, so people might grab ‘good’ domains for this purpose.