I will not assume that you know much about how websites work, but that how to open up chrome, or whatever you use, and write the address and press enter. Then go to the website.
This is what happens when you type the address into the bar of your browser.
Your computer sends request to the server.
Server reads it and look for what you asked for.
If found then returns it.
Your computer receives it and if understand it then show it.
This is a huge generalization. I will go over everything in later.. But hey stick with me.