Puppies usually start opening their eyes around 10 days. But, don't worry if they're not open yet - at 11 days. I'd wait a couple more days before worrying about it.

From what I've read, at about 3 weeks you can start feeding them dog food. I think you just feed them regular puppy food but soak it in water or broth for a few minutes before hand so it's easier for them to chew.

You have to go through the transition from milk to dry food slowly. Don't expect them to be eating dry food just a couple days after they started. You should still be giving them milk until you are sure they are getting enough from the dry food.