I've been using Photoshop since about 2002 and gained my Expert certificate in 2014 and I'd been meaning to create an online course for a few years to convey some of that experience to Photoshop beginners.
I sketched out a course outline and list of topics I wanted to cover to give the learner a broad overview of where to start with Photoshop CC. Topics were also based on the most often searched for terms re "How to ?? in Photoshop". Once I had the course outline created I set about recording the screen tutorial videos using Camtasia. I also recorded a couple of on camera green screen videos to help promote the course. All content was then uploaded to Teachable and Udemy.