How to place the string on the yoyo?
Roll the string between thumb and forefinger until a loop is formed. Pass the loop around the yoyo to put the string around the axle, or you can unscrew the yoyo beforehand and position the loop directly on the axle. To simplify practice, you can make an 8 with the loop, and pass the 2 loops of the 8 around the axle. Then roll the string between your fingers again (in the opposite direction) to avoid any excess thickness that could get in the way during practice.
How do you adjust the length of the string on your yoyo?
It's important that the string is adapted to your height. Position the yoyo in front of you, on the floor at foot level. Then unwind the string, up to your navel. Trim excess string if necessary, then use your middle finger to make a loop at the level of your navel. Be careful not to cut the string too short before making the loop. Now you're ready for some family fun with this traditional game that all kids love!