1. You'll go into hospital, they give you a bed, give you some time to get sorted.
2. They'll start to prepare you for the op, perhaps take a reading or too (blood pressure maybe) and place a small needle in the vein just above your wrist (well it was there for me), it doesn't hurt its just like a small injection really.
3. They'll bring you through to theatre, just before you go in they'll switch on the anesthetic whilst counting down from 10, you'll probably feel drowsy on 6 seconds but wont have much time to notice, as on 5 seconds you'll be asleep!
4. You wake up, the op having been completed! They let you rest for a few hours and monitior you, but you won't feel ill or anything really maybe just groggy.
Thats all there is to it, if you dont mind a small injection prick in your arm and feeling drowsy for one second, then you have nothing to worry about!
Btw I had general for a tooth out so you probably know what you are talking about dear.