Instructions
Begin a new game from the start menu. If you already have an established saved game, doing so will erase your game data. At the start of the game, you will be asked to choose a name and gender for your Pokemon Trainer and your Trainer's rival. After a short cut scene, talk to your mother downstairs to find out that your rival has been looking for you.
Walk to your rival's house in the northwest part of town. Your rival will see you approach and run back inside the house. Go inside and climb the stairs to talk to him. He will not tell you where he is going and then he will leave the house.
Follow your rival to Lake Verity where you will bump into Professor Rowan and his assistant. After a cut scene, you will be given the option to select your first Pokemon.
Select a Turtwig to make it your starter Pokemon.