Are you looking for more information on digital communications? Check out this fldigi tutorial. It is a really clear comprehensive tutorial with examples, on setting up and using the major components- fldigi, flamp, flarq, flwrap and flmsg. It’s 30 minutes long. But once you watch it, you’ll have a good overview of what each of these does, and how they all work together.
Thank you, Tango-05 for sharing the link to this video by the HuthandBooth Youtube channel.