Pokémon Red Tips

Best to start with
you can probably do this with the blue version but i did it with red. when you go to the tall grass and oak brings you to his lab he will give you 3 choices of pokemon to choose. there are squirtle, bulbasaur, and charmander. choose bulbasaur and the first 2 gym leaders will be very easy. the reason is that the third will be more difficult but you will have to go through a cave. get a geodude in the cave and have him fight many battles. on the third gym leader if your geodude evolves or is a high level you will destroy the third gym leader.