trainer points

Trainer points arent like money, you earn them by going for walks giving your dog attention and competitions. You should be able to view them by going into a options selection on the same screen as walks, shops etc.. Im not sure how many you need to unlock but as you go along you unlock things like new breeds of dogs and different rooms for your dogs to live in. Also you don't start off with treats, bubble blower and ballons, you buy them from the shops on walks.The items are always different in the shops so don't expect them all to be there all the time. XD

Trainer points are not money, they are your puppy trainer skill level You can view them by going into "go out" the "options menu" on the same screen where you can select to take a walk.
Here's a list of what you can ulock with trainer points in your version:

Breeds:

Boxer 20,000 - Trainer Points
Cavalier K.C. Spaniel - 8000 Trainer Points
Chihuhua - 45,000 Trainer Points
German Shepherd - 30,000 Trainer points
Labrador Retrieiver - 50,000 Trainer Points
Miniature Schnauzer - 16,000 Trainer Points
Miniture Pinscher - 35,000 Trainer Points
Pembroke Welsh Corgi - 10,000 Trainer Points
Shetland Sheepdog - 14,000 Trainer Points
Shiba Inu - 4000 Trainer Points
Shih-Tzu - 8,000 Trainer Points
Toy Poodle - 22,000 Trainer Points
Welsh Corgi - 10,000 Trainer Points
Yorkie - 2000 Trainer Points

Unlockable Rooms:

Desktop Room - 6,000 trainer points
Northern European Room - 40,000 trainer points
Outer Space Room - 18,000 trainer points
Ranch Room - 25,000 trainer points
Seaside Room - 12,000 trainer points
Urban Living Room - 25,000 trainer points

Unlockable Items & Toys

Balloon - 300 trainer points
Jump Rope - 300 trainer points to unlock the Jump Rope. Natural Dog Food Bag - 10,000 trainer points
Pull Rope - 300 trainer points
Windup Toy - 10,000 trainer points

Phew, that was loong... Hope I helped!