Easy Restoration experience
Go to High Hrothgar. Go out the door to the area where you are taught the Whirlwind Sprint. Once you get outside, go to the right. You will soon find a small staircase that goes up to show that looks like a blizzard of some kind. Go forward just enough to start getting hurt by it and begin using the Healing spell. Your health will go down slowly because you are using the healing spell, but you will also gain experience. This is better than fighting an enemy and leveling up your experience because you can control how much danger you are taking by simply walking backwards.