Bulbasaur:

Bulbasaur can be found at Cerulean City, near the Pokecenter.

Charmander:

Charmander can be found at Route 24 N.W.

Farfetch'd:

Farfetch'd can be found on Routes 12 and 13.

Magnemite:

Magnemite can be found in grass before the rock tunnel entrance.

Squirtle:

Get the Thunder Badge on the S.S. St. Anne, then go to Vermilion City to find Squirtle.

Arcticuno, Zapdos, and Moltres:

When you have reached the mystical bird (Arcticuno, Zapdos, and Moltres), save the game before going into battle. This will allow you to restart if you knock them out or run away.

Catch Wild Pokemon Easily:

When in battle against a wild pokemon throw the pokeball at the pokemon then just as it explodes press and hold the B button.Then the pokemon should be yours!
*Note: This cheat does not work all the time, and some pokemon may need stronger pokeballs and some need to be put to sleep, sutch as Mewtwo or Zapdos!

Pikachu surfing mini-game:

*Note: The Pokémon Stadium game on the Nintendo 64 is required for this trick. Successfully complete the tournament mode on Pokémon Stadium without using any rented Pokémon. Then, transfer Pikachu to the Pokemon: Yellow Edition cartridge to play the Pikachu surfing mini-game.

Printing Pokemon:

Your Pokemon can be printed at the Pokemon Club in Vermilion City.

Defeating Brock:

Catch a Caterpie in Viridian Forest. Advance it to level 7 and he will evolve into a Metapod. Advance it to level 11 and it will evolve into a Butterfree. Butterfree can beat JR. Trainer and Geodude. Butterfree will have to be at least level 13 before it can beat Brock. Note: Use your Pikachu's tail whip to lower their defense.

Beat Misty:

Raise your Pikachu to level 20. Then go catch a Bellsprout. Raise it until you can't stand it.

Jesse and James locations:

To find these team rocket members, go to these locations:
Mt. Moon (before you exit)
Celadon game corner (before you face Giovanni)
Pokemon tower, Lavender Town (before you rescue Mr. Fuji)
Sliph Co. (before facing Giovanni again, and before you get a Master Ball)

Give an Ultra Ball the Same Properties as a Master Ball:

When you use an ultra ball simply hold down "B" and press "Left","Right" consecutively. Now it should have the same properties as a master at 1,200 each as many as you want.

How to get HMs:

-To get HM 01 (cut), go to the S.S. St. Anne, and help the ship’s captain who is seasick, and he´ll give it to you.
-To get HM 03 (surf), go to Safari Zone, reach the house at the end. The man inside will give you surf.
-To get HM 04 (strengt), find a gold theet and give it to the warden who has speech problems and you´ll become HM 04.
-To get HM 05 (flash), go to diglett`s cave in Vermillion City. When you get out at the other side, go down to a house where OAK´s aide gives you flash.

How to Catch Abra:

Catching Abra's is a problem! But here is a cheat to do it, all you have to do is just use some sleeping or confusing move that will confuse it or put it to sleep and then capture it! Or use the great ball abra cannot escape from that!

Have 2 Pikachu's:

After catching a Pikachu in the Viridian forest go out of the forest and come back again and search the same place you find the old Pikachu in and you can find a LvL:3 Pikachu so you can have 2 pikachu's.