How can we level up apart from challenges and doing the courses?

Answer 1

There are some badges which give you a lot of XP based on your questions and answers. Do check them out.

Answer 2

I just sit in the discuss area and talk to you all. Seems to gain me exp as far as I can tell.

Answer 3

You're in the discuss area right now posting questions/replies. :)

Answer 4

What exactly is the discuss area? I havn"t explored sololearn much...