To create a server, enter the Discord homepage and click on the green + button on the left. Choose a template from the given lists or create your own. To add a server, go down and click on the ‘Join a Server’ button from the section that appears.
There you go, add your friends by clicking on any room on the server. Hit ‘Invite’ and copy the code to send it to your friend. So that they’ll join with that link to communicate with you on Discord.