Recently Techmoan released a video on setting up a record player, including a bit on calibrating the anti-skate functionality. He used a proper calibration record, “How To Give Yourself A Stereo Check-Out” by Decca Records. This is a fine way to go, if you can find it, but finding it for less than an asinine amount of money can be difficult in the US (your options are way better if you live in Europe or the UK, though).