Breeder's Office is where you can buy items, heal your crystal monsters, save the game, jump to other towns, and complete side quests.
Walk up to the man with the blue outfit named Nestor. He will offer you up to three side quests and the recommended level for your crystal monsters to be in there.
All Side Quests:Edit
Find a red core in the forest. (LV 2-3)
Defeat the monster boss in the forest. (LV5-6)
Capture wind monstersEdit
Capture three wind monsters in the restricted area. (LV 5-6)
Restricted Area BossEdit
Defeat the boss of the restricted area. (LV 8-10)
Find three antidotes in the restricted area. (LV 18-20)
Find a blue core in the forest. (LV 8-9)
Capture three rock monsters. (LV 9-10)
Defeat the boss in the cave. (LV 20-22)
Find three extinguish sprays in the desert. (LV 13-14)
Capture three fire monsters in the desert. (LV 15-16)
Defeat the boss in the building. (LV 22-25)
Find three net launchers in the cave. (LV 20-21)
Defeat the monster boss in the cave. (LV 22-23)
Take a pircture of a rock monster.Edit
Take a picture of Elevil Plus on the mountain. (LV 25-27)
Find a yellow core at a volcano. (LV 25-27)
Defeat the boss at the volcano. (LV 33-35)
Find one gold core at the volcano. (LV 30-31)
Take a picture of the Serpentine Plus wind monster. (LV 30-31)
Capture three dark monsters. (LV 40-45)
Defeat the monster boss in the forest. (LV 45-50)
Defeat the monster boss in the building. (LV 45-50)
Defeat the monster boss at the Research Center. (LV 45-50)
In order to jump to another town you've already been to at least once that has a Breeder's Office, walk up to the officer in the gray suit. He'll give you a list of places to go to.
To buy something, walk up to the Merchant in the green and brown outfit. The items vary in each town. If you're running low on g then battle wild crystal monsters.
Go to Herbage Town's Breeding Office and talk to Clint. He'll be inside after you have helped him get rid of the "ghosts" in the basement of his home. Clint will allow you to partner a male and a female together to create one of three monsters given you. The first two will be the same exact kinds as the parents. For example, if you breed a Kiticon and a Tadpolaris the first two choices for the baby monster will be a Kiticon and a Tadolaris. The third baby monster depends on the types of the parents and their evolution status. Evolved monsters are more likely to breed evolved monsters. It is possible to obtain supreme and even extreme crystal monsters this way, but not final monsters. Unfortunately in the process you loose the parents, so you have to choose wisely.