dude. read the hell out of
Video Game Cheats, Reviews, FAQs, Message Boards, and More - GameFAQs info about leveling up. Oblivion is one of the best games of all time buy the leveling system is very daunting.
I did the entire game, 100% achievments with my own class and I NEVER slept until I had my stats maxed for the level.
Also, if you intend to do all possible things prepare for 250+ hours. I spent 280 hours and never touched the add-on.