I've just finished uploading the second video in my Learn To Code With Xojo tutorial series. In it I go over the structure of a desktop app and the objects that the IDE creates for you by default when you start a new desktop app.
I'm still trying to find my feet in this endeavour. I'm not currently scripting what I'm going to say as I want to sound natural when I present but that does mean I make the odd goof. I am trying to plan out what I want to cover in the video in advance so I'm not just completely winging it on the fly.