The story picks up seven years after the defeat of Cell, following an adult Gohan as he balances his life as a high school student and the masked hero, the Great Saiyaman.
During his own training with his younger brother, Gohan is shocked to discover that Goten can already transform into a Super Saiyan at a very young age.
In the 2014 series of Dragon Ball Kai (specifically titled The Final Chapters for the English dub), is titled "Gohan's the Teacher! Videl's Introduction to Flight" . This episode corresponds to episode 101 of the overall Kai series. Episode Summary
Gohan begins teaching Videl the fundamentals of manipulating "ki" (energy), which she learns much faster than he anticipated.