Lt. Surge is at the power plant and you need to bring him a pikachu from viridian forest and put pikachu first in your party and he'll give you his number after talking with him...
Defeat Lt. Surge and talk to a lady in a house in Cerulean City.
You can get Squirtle from Officer Jenny after you defeat Lt. Surge and get the Thunderbadge in Vermillion City. To get to the gym, you must obtain cut from the captain of the S.S. Anne.first, defeat the gym leader in vermilion city and then talk to the officer jenny outside and she will give you a squirtle.After you defeat Lt Surge you go to Officer Jenny in the centre and she gives you squirtle at level 10talk to Officer Jenny in Vermilion City after beating Lt. Surge
TM24 is given by Lt Surge after his defeat at the Vermilion City gym.
Use a ground-type. Duhhhh!!!!!
After you defeat Lt. Surge in Vermillion city, Talk to the officer that captured a squirtle and will ask you if you want it.
The Reason is you have to defeat Lt. Surge and get the thunderbadge then talk to jenny and she will give you a squirtle
LT. Surge has a level 28 Raichu and that's it.
Thou go to cerulean city and go inside a cave
Officer Jenny is in Vermilion City. She gives you a Squirtle after you defeat Lt. Surge if you have the starter Pikachu in your team.
You can find Azelf in Vermillion City where Lt. Surge is in.
The third gym leader is Lt. Surge, an electric Pokemon trainer. In the yellow version his only Pokemon is Raichu. Raichu can be easily defeated by a ground type Pokemon. Conveniently, Diglett's Cave is located right next to the town. In here you can find wild Diglett's and maybe wild Dugtrio's, the evolved form of Diglett. These Pokemon can easily defeat Lt. Surge with the Dig attack.
You receive TM24 (Thunderbolt) from Lt. Surge after defeating him.