Opening your webpage by typing URL

So I've taught you how to make a HTML webpage(and design it), but how do you make your webpage such that you can open it by typing the web URL?

Method 1
1. Find a server and its administrator.
2. Open Windows Explorer(any folder)and type ftp://(server URL, to be provided by administrator)
3. If the folder requires a username and password, get it from the administrator.
4. Copy the HTML files and relevant images or videos into the folder.
5. You can access the HTML webpages if you type http://(server URL)/(your username, if required)/(your HTML file name).html/

(To be continued...)