When you turn on your gameboy yuo start with an professor Oak on your screen.You vhoose your name and your Rival.Then you start in Ash's Bedroom.Go out the house and walk in the grassy area a girl will lead you to proffessor Oak where you get to choose your pokemon. My advice is to get Bulbasaur

Pewter City
The gym leader you have to Vs. is Brock.That is why my advice was bulbasaur,because his Rock pokemon are weak agaist a grass pokemon.He has an Onix and a Geodude

Cerulean City
Misty Willl be tuff to defeat but if you choose Squirtle you will get a Bubble Beam Hm which is really strong and makes pokemon faint with one hit

Vermillion City
In order to get to LT. Surge one of your pokemon has to know cut which you get on the St. Anne and the nyou need to crack a code

Celadon City
Erika's Vicrebell will be reallly tuff to defeat if you dont have a fire pokemon

Saffron City
There are a couple of things you need to do before you get to verse Sabrina.First you need to defeat Giovanni in Silph CO.Then you need to crack a code in order to get to Sabrina if you wish to know how to do that contact me.

Fuschia City
Koga is not that tuff but you need t defeat a few people before you can get to him

Cinnibar Island
You need to find the key to the gym in the pokemon mansion and then you need to defeat about 10 trainers in order to get to Blaine