You copy the numbers at the end of the link, everything after the equals sign and put them in these tags:
[YOUTUBE.][/YOUTUBE]
Without the full stop obviously
Boop.
She/They
Yeah, I only don't like erthtkv2 because of the mod's name. Make it "tkv2," and the mod will instantly become more popular. This is a valid reason as the name of the mod is still an important feature that no one seems to have yet discussed.