The Instant Transmission technique is used first by Goku since he was the one that dicovered it on Nmek when the whole planet was going to Blow up so he just transported to a nearby planet.
What he does is he puts his index and middle finger on his forehead and thinks about the place he is going and woosh..he teleports to the place instantly.He uses this with a kamehamha against Cell for more info about the fightClick here he also uses this to bring Cell to King Kai's place but somehow Cell comes back..