A: I have probably explained this 100 times. It is a TERRIBLE idea. Because first of all gumroad is not great hosting, it is expensive and on top of that you lose marketing features. Losing marketing features = losing sales. Sales is 100x more important than hosting ... you save pennies on hosting and lose top dollar on sales ...
However we still allow you to do it. You can embed videos using the iframe functionality in the description of each lesson. I would never do it however. If you cannot pay for the hosting of your videos this simply means you are not selling enough since hosting should be about 1% of your sales. If you are just starting don't shoot yourself in the foot before you start. Host your videos on skillplate that is why you are getting an all in 1 platform to benefit from everything being integrated and helping you sell more.