Hello and Welcome to YT. "Yorkies For Dummies" is the first one I recommend. ."Yorkshire Terriers: A Smart Owners Guide" is the second book. These are excellent resource books .Another book "How to Housebreak Your Dog in 7 Days" Is very helpful. They are not as easy to housebreak.
Follow the directions on the food bag. Every food has different amounts. I hear you about the cats. I have one that thinks she is a dog too lol. Make sure she eats 3-4 times a day.
Don't forget to post some pictures. I am a little partial to Biewers
