Oh man..where do I start lol.

Do you know where you're getting your sheltie? Shelters are good (that's where I found Kaedyn). If you decide to go to a breeder, find the best breeder possible. Someone who does all the checkups for hips, eyes, guarentees for health, shows in conformation and if they also herd, even better because that's what they were bred to do. And make sure you ask how many litters they breed per year, what age their bitch is first bred and when do their dogs retire from their breeding program. There's way more that I look for in a breeder but that's a good chunk of it.

Lol..I have way more to add..but you can find me on aim if you have any questions.