Hey there, we have a platform called Jooseph which is basically playlists for learning. You can create and follow collection of links from different resources to learn a subject. If you're interested in we can create a digital marketing module for you, so before paying anything you can discover free resources through the web for learning. Let me now if you're interested in, you can also reach me out at firat@jooseph.com
If you'd like to learn how to productize your digital marketing services (or any other digital services), I recently wrote a free book: http://www.productizebook.co -- Launching a course soon as well :)