Things You'll Need
Instructions
Find tall grass, caves or water where Pokemon naturally reside. You will know when you are in a Pokemon-inhabited area when you begin to encounter Pokemon in battle.
Fight wild Pokemon you encounter in battle with your own party of Pokemon.
Use the "A" button or tap the touch screen to select your Pokemon's attacks in order to weaken the wild Pokemon.
Select a pokeball out of your items menu with the "A" button on your Nintendo DS after you have weakened the target Pokemon with your Pokemon's attacks.
Cast your pokeball at the wild Pokemon after selecting your pokeball from your menu with your d-pad. Use the "A" button to cast the pokeball. This will capture the Pokemon.