how to create lessons?

Answer 1

https://www.sololearn.com/discuss/2389102/?ref=app

Answer 2

You can't. You can write code that shows lessons though

Answer 3

You can have a look at this.

https://www.sololearn.com/Discuss/2649914/?ref=app

Answer 4

https://www.sololearn.com/discuss/2665347/?ref=app