Use the following steps to get a free horse. Once at the Hinterlands, and travel to the far west corner to start the "Master of Horses" side-quest. It begins west of the Redcliffe Farms Camp, at the large set of stables visible from a distance. Go up the hill to the large homestead where Master Dennet resides. Talk to him then agree to his terms. You will receive a Ferelden Forder. Take the horse with its saddles in the stables located to the right of the path used to exit the house.