When getting new yoyo string without loops at the end

How do I make them?

And how long should my string be if I’m 5"8

Sorry wrong section.

Gotta be a YouTube video about making a loop. It’s just a regular knot, but you tie it with the “doubled-over” string that will become your loop.

Doesn’t matter what length you make it, really. Most people seem to go an inch or two above the belly button for final length.