What happen to complete a course and get a certificate ??

Answer 1

When you complete a course, you get an certificate(which does not hold any professional value) that's all. Nothing new is unlocked or gained apart from knowledge that you got from the course.

Answer 2

Thanx

Answer 3

It just an award to you to learn a language.
You can also get some Achievements for completing course like
1."Achiever Complete a course"
2."Hat Trick Complete 3 courses"
3."Course Master Complete 10 courses"
And the best and special Achievement is "get a lot of happiness".
These are much........