OK so in my other save I am primarily a 2 handed fighter but when I saw how cool some mage spells are, I decided I want to try for a PURE MAGE. I would like to know a good race to use, if you know. also, How do you mages go about protection in your weak robes? some kinda shout? OK you guys are thinking ARGGGHHH ANOTHER ONE OF THESE THREADS, and I am sorry. if you are just gonna insult his thread, plz don't post. thank you

Most people pick an Altmer or a Breton for a Pure Mage.

For armor, almost all pure mages use the "flesh" spells and the Mage Armor perks in Alteration to make up the loss of armor.

Protection is primarily found in the 'Flesh spells as stated above, usually combined with the Mage Armor talent to make them more powerful while wearing cloth. You're not restricted from wearing Light or Heavy Armor, of course, but until you grind up Enchanting you'll be left to the mercy of finding Mage friendly random enchantments on those.

As far as a "build" goes, if you're going for a "pure" Mage, all five school trees are pretty invaluable in some regards. I tend to play my mages with Sneak on the side because it seems a wise man and scholar would know to stop, assess, and then act rather than storm in, bolts flying. The Illusion tree's "Silent Casting" makes this rather viable as well.