Be ready for a lot of loving and following you around! Nothing like a yorkie!
Grooming....expensive. I do my own. It works!
It is better to use a harness for walking than a collar because of the trachea area.
There is probably a ton more advice, but I'll leave that to the other yorkie talkers.
I'm happy for you. Having a little furry boy is a lot of fun. Best wishes!