I knew nothing about yorkies prior to coming here, so it's hard to list everything... here's a top ten:
10. How to brush my dog's teeth.
9. Where to find dog food ratings.
8. Questions to ask a breeder if Thor ever wants a sister!
7. How to make my dog's poop pretty (let him eat crayons, glitter, or silk flowers!)
6. Flossies.
5. It's okay to dress up your dog.
4. What to do if your dog's erection won't subside.

3. Thor is not the only yorkie with potty training issues.
2. Never buy a cat or dog from a pet store.
1. That there's no such thing as a teacup yorkie! Quite a surprise for my yorkie, previously named Teacup!