
Jade,
sorry, but it doesnt quite work like that.
You need to find a breeder who is planning a litter in the near future, contact them and have a chat with them. If they then wish to sell you a pup, they will tell you when they have a litter planned. You may be asked for a deposit etc. Then you would visit the breeder and the parent dog(s) adn then again when the pups are born, then you pick, or the breeder will pick the one she/he wants you to have.
Of course, you 'could' go to a backyard breeder, or pet superstore, but really, unless you WANT to own an unregistered, or unhealth checked ripoff i wouldnt advise this at all.
So, the chances of you being able to pick up a puppy tomorrow are next to zero.
Please, go about this the right way, research your breed, and your breeder and be prepared to wait for what you want.
Emma