Good sliding vid from Kevin. IMO it is best to slide on your right side because it puts you face away from an errant throw(Safety Issue) but more importantly it puts your eyes in the OF so call see a ball that has eluded the infielder so you can take the extra base.
jw
How the slide is taught — U.S. vs. Japan.
🇺🇸: square on the backside, hands up to protect the fingers.
🇯🇵: turn the body sideways / twist toward the folded-leg side (体の向きを横にする), with the hand naturally coming down.