Step 1:

To start a call, open Zoom and click on the “New Meeting” icon.
Step 2:

You will be asked to "join with computer audio". Click this button and your call will begin.
Step 3:

Click to "i" icon at the top left of the screen to get the meeting information. The meeting ID will be at the top of the screen.
Step 4:

Send the meeting ID to your friends or family and they will be able to join the call.