No problem. I remember ServeChilled81 made a thread using one and just like you I was curious about how to post them as well. It took a little time to get them right.
As far as embedding, I think NT has more options/less limitations than most internet forums I've come across.
Example using this link -->
1. Change the text after the v/ in the src portion of the html coding below from "hApu9dvX5jK" to "hvu9EIBjvAh" (or the one you're trying to embed)
2. Delete the 1st space that's inserted in the tags
Hopefully that works out