How do you get bp points in Pokemon HeartGold? - Answers

At he Battle Frontier, which you can access after you defeat Lance. The facilities are: The Battle Tower, which is basically basic Pokémon battling. The Battle Hall, where you choose one Pokémon to fight 10 rounds. The Battle Castle, where you earn CP and use it to buy items, heal, etc. The Battle Arcade, where before each battle you'll spin a roulette to see if something special will take place during the battle, like your opponent's Pokémon being poisoned. The Battle Factory, where you use rental Pokémon. You can get anywhere from 1 BP to 20 BP per round, and you can use the BP to buy things like Rare Candies and TMs.