Go to the daycare man in Goldenrod City and put the egg in your party. After a while the egg will hatch.
Editor's Note: the egg may instead hatch into a Pichu, an Igglybuff, a Tyrogue, a Magby, a Smoochum, or an Elekid.
Submitted by 123456789kid
Entry location: Anywhere
Get a Larvitar and raise it to level 30. Once it turns into Pupitar you have to raise it to level 55, and it will evolve into a Tyranitar. A good place to train Pupitar is at the Elite Four or the Silver Cave.
Submitted by H0T Chick S.J.
When you exit the forest from Azelai Town go to the Daycare and talk to the man and he will give you an egg.I was lucky and got a Tyrouge, plus the pokemon you get wiil have the attack Dizzy Punch.The pokemon will also be on level 5.
Submitted by Pokemon Master
Turn your radio to 20.1 at the lake of rage and you'll hear strange noises.
Submitted by Patrick Tibert
Every Wednesdays and Saturdays, a man will appear outside of Goldenrods casino. If you have 4,000 coins in your coin box he can teach your pokemon these special attacks (only one Pokemon a day): Flamethrower, Icebeam, and Thunderbolt.
Submitted by Karlo Coloso
Hook up the mobile adapter*. Go to the communication center in goldenrod, and read the message on the lockers to the right of the room. They will talk about a present from the future. Leave and the blue headed nurse will ask you to defeat all 16 gym leaders in order to obtain the GS ball. Once you have done so give the ball to kurt. the next day he will give it back. put it in the shrine in the ilex forest and a level 30 celebi will appear to fight you.
Submitted by ultimintgamer