This trick is important for tricks like Split the Atom, so learn it!!
1.First, throw a sleeper.
2.Bring the middle of the yo-yo string up with your free hand.
3.With the hand that is holding the yo-yo, wrap the string under the yo-yo.
4.Keep on putting the string through the groove, pull the string up and over the finger of you free hand.
5.After you've wrapped the string over your finger as shown in step 4, put your pointer-finger on the first string you wrapped around, you are about to pull back.
6.Pull the string back toward yourself, you are about to thread the string under the yo-yo.
7.Slide your hand under the yo-yo, using the hand with the yo-yo in it, thread the string through the yo-yo's groove.
8.You should find your finger behind the furthest string from you. To continue doing barrel rolls, just drop your finger back to the first string as in step number 5. Then continue steps 6-8, see how many you can handle!