you need to start being a sneaky c#nt its so much more enjoyable than magic

most normal guys die with one shot from a bow if you are sneaking as it does triple damage, and sneaking up behind someone and slitting their throats then slipping back into the shadows to kill all their mates is awsome fun

You can also kill giants for fun, sneaking ftw!
also a tip for leveling sneak, go into the house of the guy that leads you to riverwood at the very start (or any unkillable npc that likes you) and backstab them while sneaking. They wont attack you back until you do it 4 or 5 times, then all you have to do is stop doing it for 10-15 seconds, then attack them again. It levels up really quickly, at the start its almost a level per hit

works for archery as well