Hello and wishing you a happy new year! Bases on your description I have a few thoughts on what might work for you. This is of course is assuming the following: you are wanting to have a professional and fully functional website in a timely manner, being able to sell digital products
(subscription or a single video program/ lesson), and the ability to focus more on generating sales, rather than managing the back end of your website.
You did not mention a specific cms or system you wanted to use but I thought shopify could work great for your needs. I would love an opportunity to talk with you more about how this can work for you as well as offer other options. For clarity sake I am not a shopify sales agent; it is all personal experience I have seen great results with other clients.
Thank you for your time.