Apply lots of aloe and drink a lot of water, staying hydrated will go a long way in the healing process.
My wife is your stereotypical redhead with alabaster white skin - if she even thinks about the sun too long she burns. Being a California beach girl, she's had a lot of experience with treating sunburn, and she recommends a thick slathering of aloe immediately followed by light moisturizing lotion 2-3 times per day until the peeling stops.
Vinegar is a tried and true remedy. Aloe Vera is good, too. But if you just suffer, maybe you will remember to not get sunburnt in the future.
First you have to build a time machine....