to get the summons/spells u need the books can be found or bought in general good stores or mage in whiterun (dragonreach) or college of winterhold yah magicka and hp ill say, stamina only if u want to carry more stuff

enchants are basic, when u are able to either enchant with reduce cost for ur school of magic (conjuration for example) or get mana regeneration (or both with the last perk of enchanting) u can also get 2 reduce cost for different schools of magic but remember that resist to magic enchants are awesome too ;D
regarding that and the question about races high elves start with magicka boost and racial to get mana reg like crazy for 1 min per day (if im not mistaken on the 1min part)
or breton has resist to magic and racial to absorb magic

gluck try lotz of stuffs skyrim is fun
