This makes the fence stronger as it is more difficult to break the fence by pushing the boards out. There needs to be space between the ground and the bottom of the fence to allow room for mowing and weed eating. Fresh water needs to be provided at all times, whether in stall or pasture. You can get sturdy feed and water buckets at the feed store. You can get either hanging water buckets or a tub for the pasture.
Some people prefer automatic waterers.
Feed buckets should be scrubbed at least once a week. You can use a hanging feed bucket or you can get feed tubs that are bolted into the corner of the stall. The type you use may depend on your horse's eating manners. Always check in any area that there are no nails or broken boards sticking out and nothing dangerous lying on the ground. Having a horse can be a lot of fun, but it is also a big responsibility that takes constant awareness of yourself, your horse, and the surroundings.