We live out in the country, we have lots of livestock, just no horses. Zoning isn't an issue.
We live on 400 acres, but the horse will be on just a few (here at our house). We have all the grass hay we want. We are surrounded by cattle on every side (some are feed lotted, so I don't want the horse with them anyway). We have goats also here at the house. We have a small plot fenced that we are hoping will work for the horse for a little while. It is planted with wheat/bird seed, but isn't really thick or tall. We plant it there every year to turn our goats in it during the later part of winter so they will always have fresh green food.
I'm a little concerned it might be too rich for the horse, though it is pretty small (1/2 acre). Where he came from was pure dirt/mud, he didn't have anything fresh and it was even smaller than where we plan on putting him. When he comes we are putting our new baby donkey in with him so they will both have company.
ETA:I'm going to copy and paste this so it will be in a more appropriate place...
Oh good, then you're all set as far as livestock and the ability to care for them.
Several books you might want to look into buying are Horse Owner's Veterinary Handbook (I have it, very useful), Understanding Horse Behavior, Understanding Equine Nutrition, and Wellshod: A Horseshoeing Guide for Owners and Farriers.
In case there are no books in lib I'd recommend to check the Internet on stuff like trimming, feeding, etc. There are awesome articles (and websites as for trimming for example) published all over the net.
Welcome, I am also new to this site, ownership, & have my horses at home. I am reading a book called "Keeping a horse the natural way", by Jo Bird, so far very helpful, has side notes by Pat Parelli. I have also found Googleing any of your questions helps, tons of sites and have found Horse folks are always beyond willing to help. You can actually just search this site for most of your questions, I've rarely had to start new threads. Also if you have a great feed store they are always helpfull with nutrition, mine is.