Skyrim Tip #62 Leveling Illusion

   If you want to level up your Illusion skill quickly, it’s pretty effective to just cast muffle or illusion repeatedly while you’re walking around.

Skyrim Tip #61 Leveling Smithing

If you’re leveling up your Smithing skill by crafting Iron Daggers, then you’re wasting your materials. Smithing levels by the value of the item created, so it’s far more effective to craft the most valuable items (with the least amount of materials). This means crafting armor, bows, and jewelry.