Find your niche partners, collaborators, and champions: As you’re creating your course, look for notable people who are also creating content in the space. Look at how their businesses operate and incorporate that into your own plan. You can also reach out to any influencers and make them affiliates for your own course. This way, they’ll be incentivized to share your content with their own audiences (which can be a major way to generate your first sales—it helps if you're using one of the best CRMs for small business—and start building your own community!)
What makes making money as an online English teacher particularly interesting and easy with sites like VIPKID is the fact that you don’t have to spend any time or money trying to find paying clients. VIPKID is a huge platform with hundreds of thousands of paying students. The site takes care of everything for you. Bringing you students, scheduling classes, pay, etc. All you have to do is set up your own schedule (yes, you get to decide when you want to work!) and teach during those hours.
The best part about this is that you don’t even have to ever touch the actual product, nor do you have to spend a dime on manufacturing these products. They do all the work for you. You just upload the design, choose the items you want your design to be on, and they’ll handle the rest (i.e. manufacturing, payment, shipping, and handling, returns…).
Choose your niche and check for demand: The golden course combination is when you can find an in-demand niche that aligns with your skills and unique experiences. A great way to do this is to use Google Trends, Google’s Keyword Planner and other key blogging tools to do keyword research and look for average monthly search volume for keywords related to your proposed course content. Are people actively looking for high-quality information about this subject? Of course, if you’re already creating content for a blog, coaching service, or a site like Medium, you can test demand this way for free just like Bryan did.
Of course, you have to be realistic. Just because some people make millions, doesn’t mean everybody will. But you’re not reading this post to become a millionaire, you are here because you want a free way to make some extra money and making YouTube videos is a great way to do it. Who knows, maybe your YouTube channel will one day become a huge and earn you hundreds of thousands of dollars.
Upwork: This website offers a great marketplace for selling just about any professional service. You don't need a merchant account, website of your own or anything else for that matter. All you need to do is be able to provide a high-quality service at a reasonable price. But be informed, you will have to compete with many others that are constantly bidding on open jobs. 
Now, making money online should seem like a pleasurable activity. Why wouldn't we do just about anything to see things through, since it would be a major source of pleasure, right? Wrong. In the beginning, like anything else, we might get really excited about it. We might also set our hopes very high. But that all comes crashing down when we begin to fail.