you don't. you use it in Pokemon sapphire to make your secret base.
Secret power is a TM you can buy in the celadon dept store.
the power plant on route 9 i think
Aura Beam is in Pokemon HeartGold.
That is impossible in Pokemon HeartGold and SoulSilver.
No, you cannot sell eggs in Pokemon HeartGold.
you must defeat red and he will give it to you
Some Pokemon learn ancient power as they level up.
You don't
He is outside the power plant
in the power plant
hidden power
there is absolutely no secret apricorn in heart gold or soul silver, but good question.
You can't.You have to surf.
You have to answer anyone you want. He doesnt give you anything.
You can't, unless you mean secret base. You have to have a Pokemon with Secret Power. Use Secret Power in front of a tree or an indention in rock.
Walk around the power plant for a bit
you need a Pokemon that knows secret power use that move to make your secret base