It can be boring to walk everywhere in The Legend of Zelda: Breath of the Wild so this is how you can easily tame horses out there. You'll need to play a couple hours into the game and when you're done the tutorial type area head over to the next spot that's mentioned for the main quest. This would take you to Kakariko Village and then you simply head south down the road towards this massive valley. Within this valley you'll find a horse stable and in turn, wild horses all around. I've included a map of where this location is and a video at the bottom if you'd like a visual aid for horse taming along with a video map. You can also read below the map to get the general layout on taming wild horses in the Breath of the Wild.
Taming horses in this game is incredibly simple and literally takes no skill at all. The first step is finding a group of horses out there walking around, specifically the area mentioned and walk towards them. The horses will be grazing, crouch and then sneak up behind one to click the mount button. You'll hop on the horse with it bucking a bit, pat it a few times to soothe the horse and you're good to go. It's that simple to do and if you have any issues let me know. Once the horse is calm enough to control, head over to the stable and register it. This costs 20 rupees which is super cheap, it allows the stable to stock it for any stable location to pull out the horse if needed and grants a saddle. There's a limit of five horses allowed in the registry so pick the steeds wisely and get rid of weaker ones as you go. Once you have a horse they can be difficult to control, whistling by clicking down on the D-Pad sends them towards you. The kick system for speed is best used by; kick, kick, soothe, soothe and then repeat. This keeps it steady while keeping a solid pace, it's still somewhat slow though better than walking everywhere.
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