Parakeet care? I just got one. How big of a cage should I get, etc?

How big of a cage should I get?
How many toys?
should she have a friend?
when will she star eating/what kind of food should i get her (she wont eat a long brick of seeds and stuff in the cage. we got her for about 12 hours now)?
More information is greatly appricated!
Your stupid (whoever anwsered me first)I GOT A CAGE A FOOD! I DID RESEARCH IDK HOW BIG OF A CAGE I SHOULD GET OR IF I SHOULD BREAK UP THE FOOD! get a life looser.
- ZOMBiE! RIP Chris and Eddie-PAC