Did Rand ever tell anyone specifically that he used the True Power, or just 'i killed them' and then go about banishing caddy to the far reaches of his peripheral?

 

As far as is stated, no, he never told anyone. And I doubt he ever would.

I am not even sure Rand knows it was the true source.  I don't recall him ever being told by anyone about the true source by LTT or Asmo.  Heck, I haven't even heard any AS mentioning this in any book yet so I think only the Foresaken know.  Now I will have to go read them again and see if Lanfear ever mentioned it to him.

How do I do an introduction of myself as a new member?  Do I do it on my profile?  I went to the introduce yourself tab and saw a bunch of intros but not sure how to post mine.