An e-commerce website has to specific on a niche to succeed; it is the structure of the system. You have to take time and identify an interesting niche. Yes, you have higher chances of working on content you like than in topics you find boring but only doing it for money. Identifying a gap in the market and working on it as a niche might work but not for long. You are unlikely to develop low-quality videos or mediocre content on topics you love. This is the basic tip to a successful e-commerce business. Do not ignore quality and relevant content. However, building a site and waiting for consumers to find your content relevant is a traditional and ineffective way to go about online business. While it depends if you want to function as an affiliate or make sales directly to consumers, the marketing tip is no longer applicable. It works the other way round. You have to begin with customers in mind. The design and content have to be based on a specific type of audience.