This looks to me like a standard sized chick. Where are you located? Basically the only care is food, water, and cleaning. The pine shavings are great for bedding. When the bedding starts to look gross, you can take her out for a bit and replace the bedding. Make sure you hold your chick and give her lots of treats- scrambled egg works great. Unfortunately the lowest minimum you can get from most places is three chicks, so you'll need enough space for four. That means you need 16 square feet of coop space and 52 square feet of enclosed run space.