See the video here, to learn the basic procedure for moving an unconscious (but regularly breathing) person from their back to the “recovery position.” In the recovery position, their airway is cleared, any danger of choking on their tongue is lessened, and they are in a safe position in which to awaken.
There is no research basis to raising the feet, despite the sense it may seem to make in increasing blood flow and blood pressure to the brain. Skip the feet, and use the recovery position: