As a concept and practice, much has been written about SEO, especially for those wanting to get a business noticed online, be it a commercial product, video or public information. There are entire free courses dedicated to the subject (such as this one from Coursera). This section teases out the simple steps that you can make to ensure the best reach for your online course.
OpenLearn - 10 Publishing and publicising your course Except for third party materials and otherwise, this content is made available under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence, full copyright detail can be found in the acknowledgements section. Please see full copyright statement for details.