I'm getting a sleeve gastrectomy and I want to know everything about it.?

Talk to your surgeon. It's the doctor's responsibility to explain it and answer all your questions.
Sleeve info. Try reading here: http://www.Nlm.Nih.Gov/medlineplus/ency/article/007435.Htm and http://surgery.About.Com/od/proceduresaz/a/vsgwlssurgery.Htm.