It’s time to study. Two books that I’m studying are Rebsie Fairholm’s The Lost Art of Potato Breeding and Carol Deppe’s Breed Your Own Vegetable Varieties. I’ve learned that a reason you only see seed potatoes and never potato seeds for sale is that due to the genetic complexity of potatoes, potato seeds don’t grow true. Which means, that when you plant potato seeds from one plant, you end up with a whole variety of different potatoes. It does mean that developing varieties of potatoes perfect for your specific garden is possible. Plant enough potato seeds, see which of them do best in your garden, and then keep replanting the tubers of those selected potatoes, and you will have your own unique variety of potatoes no one else has.