I only teach topics I have real life experience in coupled with passion for the topic. I've been a Personal Development and Leadership Trainer for over 20 years so much of my material comes from that experience but with my individual take on the topic.
All my courses are works in progress. So I start with general principles with the view that over time other deep dive sections will be added. As I said I am a work in progress :)
I have a list of courses to do that is over 20 long, they are all subjects that I know about and that I have a passion for teaching. I match that with the Udemy Market Insights and the info I gather from my students and FB group to decide roughly which order to do them in.
I'm targeting 1 course per month this year so I tend to do a shorter course one month and a longer the following month. All of the courses go further in than general principles, particularly the longer courses as I want students to have as close to a complete learning ecxperience as I can give them.
When you’re first starting out, topic selection is perhaps the second most important thing that determines success. (The first is that you have to meet a basic level of overall quality.) There’s no point having an amazing course on a topic nobody is searching for, or even an average course on a very popular topic. So you need to find out what people are wanting to learn from you and would pay money for.
Once you’ve done that, you start to make sales. You start to get students going through your content. You need to continue to provide quality training on topics those people want to learn. You create 2, 3, 4 or more courses. And if you’ve found a good niche, you just keep doing that. Keep digging for gold where you have already found gold. Don’t move to a new spot just yet!
Eventually, you get to a point where students ask you for things. Students ask, “when are you going to have training on X?” And you thank them for the idea. And if students keep asking, you need to consider making a course on that. You need more than one person asking. The market tells you what they want.
You always have to have an eye on the possible popularity or the size of a market. Don’t get trapped making courses on smaller and smaller topics. You need to still be able to produce courses on big topics to attract even more new students to you. It’s a tricky game.