you should use water type Pokemon
in the 1st gym badge
in orberugh city.
a pliplup because and 1st gym battle is a rock type so yea...............and u need it for surf
From the 1st gym leader
You choose it as your 1st partner Pokemon.If you didn't choose Turtwig then you will have to tradewith overs that have Pokemon pearl, diamond or platinum.
he's in oreburgh city
1st time you battle him is at Celestic Town2nd time is at the team galactic HQ which is in veilstone 3rd and final time is in the distortion world.
In platinum, you capture garatina 1st, then dialga, then palkia.
Galactic Veilstone Buiding 1st Floor
after you've defeated the 1st gym leader
Girl on the 1st Floor in the Pokemon center in Eterna City.
Jubilife city. in the conominiums. 1st floor