The Elder Scrolls IV: Oblivion Tips

Making your own spells
When you get recommendations from all the city Mage Guilds, you can go the the Arcane University in the Imperial City. One cool thing you can do is create custom spells. If you know any unlocking spells, you can make stronger ones you don't know. Same thing goes for any other spell. Basically, you can ultimatize any spell you know.