Indigo Plateau.
to find Blue in HeartGold or SoulSilver go to Cinabar Island next to Seafoam Island and go right next to the Pokemon center.
Go south to the next gym.
go to the next gym leader.
you go to new bark town and go on the water next to your house!
You can't go to Hoenn in Pokemon HeartGold. You can only go to Kanto.
you will get an added star and for more info go to seribi net
I don't have heart gold but its Vermilloin city next gym leader is Lt.Surge he has electric Pokemon No,Brock is next,ok?
get all 16 badges and beat Pokemon league, go to pewter city, talk to guy next to pokemart, he gives you something, then go to bell tower, hooh is at the top at lv 70
you cant find celebi in heartgold nor soulsilver[sorry].....mystery gift poke FDASREAFGonce you have a hooh and a lugia you can get an apricorn from that random guy who gives you the thing to get kyogre. Take it to the forest and go to the statue that is for the guardian of the forest, celebi. celebi appears and takes you back in timeIt's an event-only Pokemon. The event has already passed. You'll need to trade for it.
ZAPODOS HOOH LOGIA COOL RITE OH HAY TO GET LOGIA IN POKEMON GOLD TRADE WITH SILVIR ZAPODOS TRADE WITH RED BLUE OR YELLOW HOOH JUST GET THE RABOW FEDER IN POKEMON GOLDTHEN GO TO ENTA THEN YOU BATTLE IT
You can only go to Johto and Kanto in Pokemon Heartgold and Soulsilver
in goldenrode city go all the way up and right next to the gym it the flower shop