How can I make offline all the courses?

Answer 1

By Default all the Sololearn Courses are available OFFLINE.
But XP not Consider.

Answer 2

We can only have official courses available offline. User submitted materials, which are gathered and organised into a course can only be bookmarked.

I think we can bookmark user submitted courses only by the chapter, not sure if bookmarking a user submitted course entirely offline is possible though. Bookmarked chapters are available offline (cmiiw)

Answer 3

You cannot make it offline Because It's store on a server which is located at other places. So to access this you need internet.