I've been providing services (coaching, groups and classes) for over twenty-five years. I self-published a book in December 2018 and now I want to pivot my business to focusing almost entirely on products that I can sell online. I have loads of content that I can repurpose from years of being in business. Plus, I've written four blogs. My biggest issues is funding. I want to hire someone to design some products related to my book. I'm also designing an online course, but really need to hire a videographer and stylist because there are 38 modules that need to be filmed. So I am clear about exactly what I need the funds for. I prefer not to take out a loan and saddle myself with a heavy debt.
I am not convinced you need an investor for what you are doing. Why give up part of your company and someone else having a say in your dream.
I would start with some simple videos at Udemy, going through that you will learn a lot and move up from there.
You may also consider a local intern to help you sort through the material and put it online.