This is a video guide on how to string your own racket with the Yonex 2 strings 4 knots technique. Each racket can be strung in approx. 20 minutes. The tension set in this video is 24/26 lbs.

Tips:

The easiest way to measure length required is by extending both of your arms outwards horizontally, essentially making your body a ruler. I'm 173cm and generally I need 3.5x the length for vertical string and 2.5x for horizontal.

I prefer adding 0.5 lbs to the middle 6 vertical strings, and reducing tension by 1.5 lbs for the top 5 horizontal strings to maximize sweet spot tension.