How do you get a second starter Pokemon in Pokemon soul silver?

Answer 1

I think once you beat every Gym Leader in Kanto, you go to Oak's Lab and he might give you Kanto starters. (Charmander, Bulbasaur, or Squirtle you choose which one.) If I'm wrong you can be mad at me if you want. <3

Answer 2

if you want the kanto and hoehn starters you must beat red,the stongest trainer,if you want sinoh starters,you must trade them from Pokemon pearl,diamond or platinum,if you want the other jotoh starter,you can get them over WiFi,(if you have internet conetion)

hope this helps! ;D