Building online courses

I have found that online courses are so helpful! There are literally tons of great courses out there! So I started building my online courses based on my live seminars and it has been a blast!

I used Udemy in the beginning but have bought my own LMS platform since last November. Now my sales have been great and I have just finished my first English course!

So, does anyone find online courses helpful? In what way? Some feedback would be great!