Hello Otatade Okojie here Marketing and sales will always be a profitable niche because they are relevant, they are key and in consistent demand. A marketing course on udemy with bitesized manageable and animated syllabus engaging content, illustrations, including one with sales , some data, and some analytic, how to strategy tips, and ideas, pitch ideas, how to turn around rejection ideas, how to close ideas, how to Monetise products on different platforms, and work the algorithms, will always be a hot sell. Audiences love this type of content. Sales challenges them, it forces them to engage, it forces them to connect, to step outside the bracket and outside their comfort zone. Marketing teaches them how to build profile, how to be seen, how to translate content into viable commercial products for economy.Research first of all what challenges your candidate is looking for? What would you like to sell them? What courses could add value , could make an impact? Could give them more transferable skills. Could these courses give them a job that your providing, improve their sales skills, their business to business engagement, their leadership skills, their commerce skills, maybe you want to teach about branding? What impact could your course have on their finances? How could you improve their life providing more access?