Trading is when you trade one of your pokemon for another person's pokemon, as most of you pokemaniacs know.
1.Create a topic
2.Put up all the pokemon you want to trade (don't forget the HP, LV and UC EXP TO NEXT LV)
3.Someone might pass by, asking to trade one of their Pokemon for one of the pokemon you put up, it's your choice whether to accept or decline
4.If you accept, just say " TRADING 'WHATEVER POKEMON' " and then wait for the other person to say the same, and once this happens, voila.