A short guide to 3 handy things you might not have discovered in Kingdom Come: Deliverance.
https://www.youtube.com/watch?v=QHGphDxgjKQ
P.S. As Knight's Arcade's fans pointed out, there IS a way to repair tack.
Take your saddle and bridle off the horse and place it in your own inventory. Once you've done that, simply take it to a cobbler or repair with a cobbler kit.