Okay, good, so lets play this out a bit.
You're claiming these courses, and you also claim you did well and learned something.
So...
Scenario 1 you're interviewing for a job:
Interviewer has knowledge and experience in the area of question.
They ask you "tell me about XYZ - you have taken courses on the subject? <looks at your resume>".
Your answer is:
* "blah blah blah blah blah ..lots of juicy details about the cool stuff you learned."
* "blah blah blah, where you learned it from"
* "blah blah what you did in the course"
* "yada yada, here's an essay I wrote, citing sources".
* "foo bar baz I got a article published in a magazine or did a talk at XYZ"
* "I built this thing for XYZ ..check out these pictures"
Your answer is
not:
* "Here's my credential in XYZ"
Scenario 2 you're hanging at a local meetup for XYZ, you know, "doing the networking"
Someone says "FOO in XYZ subject is cool"
You say: "No doubt! I took a course on on XYZ on coursera. I did a whole section on FOO, it was sweet"
You do not say : "here's my credential"
Scenario 4 you're on a date
You do not say : "here's my credential(s)"[1]
Scenario 5 you're hanging with your significant other, having a intellectual discussion (I guess the date in #4 went well)
You do not say : "blah blah blah - I have credential(s) - yada yada, I'm right"[2]
[1] whatever credential(s) is a euphemism for -- you can never lead with this on a date :) :) :).
[2] this never works