Directly from an experienced breeder. They will be able to tell you the whole story of the babies life from day one. And most breeder and sellers don't start babies correctly, so beware.
Reading these two threads will help you understand what questions to ask and what the answers should be. You will be amazed and frustrated at how many sellers answer your questions all wrong, or don't even know the answers.
Welcome.
Before you get multiple tortoises, are you familiar with what keeping even two of one species envolves?
It's very easy to get in over your head.