Developing an app from start to finish

This morning I watched a video demo about developing an app from start to finish. I'm always curious about the entire process of developing an app since I wasn't sure where or how to start.

This one hour video: I Have This Idea For An App... from WWDC 2018 gives me a better overview which helps me to breakdown what are the skillset or software I need to learn.

Taking baby steps at a time.