Walkthrough:Pokémon Red and Blue/Section 2

Pallet Town
After the introduction you will start in your hometown, Pallet Town where you finally the day came that you will become a Pokémon Trainer. If you leave your house, do not yet go to Professor Oak, if you do, you will see his grandson also the rival in the game. If you talk to him, he will tell you that his grandfather isn't around here. To find Professor Oak, you must go north to Route 1. You must enter the grass which he suddenly appears telling you that it is unsafe to walk in tall grass cause wild Pokémons are living in there and that you need your own Pokémon for protection, which he takes you to his lab.

There you can pick up three Pokémons: Bulbasaur, Squirtle and Charmander. You can pick first which your rival will pick one after you. After you got your first starter Pokémon, your rival wants to battle you with his starter Pokémon.