People are turning to audio and visuals when it comes to technical subjects. However, you should consider doing an ebook first and turning it into an audiobook through a resource like Audible's ACX platform. You can hire a producer either through a royalty share program, so you don't have to shell out upfront cash, or you can do a pay-per-hour hire as well.
Youtube: Youtube is the largest video sharing website till now. If you are thinking youtube only as a medium of entertainment then you’re wrong. If you could do a little hard work YouTube can be your largest source of income. Many Youtubers are earning millions of dollars just by making videos. many people have became multi millionares from Youtube. But it is not as easy as you think. When you start your channel for first, It is very difficult to gain subscribers and viewers. Patience is needed and you should upload videos regularly. You can apply for adsense once you’ve 10000 total views. Unlike in website Youtube will take 45% of your earning as a hosting charge.
Research individual companies in your desired niche: If possible, it’s always better to become an affiliate directly with a company (if they have an internal affiliate program), as no one else will be dipping into your commission rate. This is the preferred route for most of the prominent affiliate marketers, including Pat Flynn. Unfortunately, it’s also the most work, as you’ll have to do the research yourself to see who offers programs (they’re usually listed in the website footer).