First you to go find Misty (By Bills house) Misty will run away go back to gym then you can battle her
Cerulean cave located near cerulean city.
Vermilion city.
Go past mt moon go east and you will be in cerulean city.
inside cerulean cave near cerulean city.
cerulean city
north of cerulean city
Go through Mt. Moon.
go south of cerulean city
by trading a poliwhirl for the jynx from the man in cerulean city
Go to the cave between Cerulean City and Pewter City.
In green is north of Cerulean city,probably is and in red...
The cerulean city gym.