This is whereyou can see which trainers are available and what they teach you and if you want to train with on of them go to the message board and post a message telling who you are, who you want to train with, if you want to learn a attack or just train, how long you want to train or how long it takes to learn the attack, and what attack you want to learn.
Earth
Master Roshi
Kamahamaha/3 days
Solor Flare/2 dys
Barrier/1 day
Destructo Disc/5 days (only humans)
Yajirobe
Fury Slashes/1 day but you have to have a sword
Ki sheild/5 days
Half Ki Recover/5 days
Doctor Gero (only Androids)
Energy absorb/5 days
Reform/10 days
Self Destruct/ 15 days
Namek
Guru
Unlock Powers/20 dyas all stats x2
Planet Creation/25 days
Regrowth/3 days
Namekian Fusion/5 days
Freeza (Changlings Only)
Freeza Beam/1 day
Mako and Mega charge/1 day
Heat Seeking Disc/1 day
Full Ki Recovery/1 day
Full Recovery/1 day
Coola Beam/10 dyas
Dende
Namek Boost/2 days
Namekian Fusion/2 days
Regrowth/2 days
Special Beam Cannon/5 days
Dragonball creation/25 days