I'm mainly adding this for my own reference, there's a few things I forget how to do but come in handy every so often. I thought this might be a good place (hope it doesn't already exist) to list these out.
How to Properly Embed a Youtube Video:
1) Hit Enter twice before inserting a new link and use this URL and add the unique video identifier from your specific youtube video after the "=" symbol.
https://www.youtube.com/watch?v=
(for example I put an extra space after h so you could see the full URL: h ttps://www.youtube.com/watch?v=QwnsN4UAX1I)
2) Highlight your link URL and use the Break Link button (next to the Link button) to break the backend link.
3) Hit Enter twice after your URL
4) Post