User blog comment:SharkMoon6621/Smithing!!!/@comment-5450493-20130317201741

I leveled my smithing up to about level 75 with smithing Dwarven things and using trainers. For the last few levels what I did was go hunt deer for their hide on the Whiterun tundra (with a soul trap-enchanted bow so I could harvest souls and level my enchanting later), then go buy every steel and iron ingot I could find in the city and smith everything I could, enchant that, and sell it and repeat...a lot.

If you want to level up really fast (and aren't opposed to being a bit of a noob), there's a bookshelf glitch with the Oghma Infinium that lets you use it an infinite number of times. (Don't call me a noob--I didn't use this method! I just read about it on this wiki.)