You will discuss the procedure with the dentist on the day of your dental examination and have the chance to ask questions.
Use good oral hygiene leading up to the procedure day, to keep your teeth clean and your gums healthy. An inflamed gum will tend to bleed more during the surgery.
Make sure you have a good meal before your appointment, because you will not be able to eat for few hours after the surgery.
If you feel anxious about the surgery, you could get a sedative prescribed. Take it the night before the surgery to have a good sleep and 1 hour before your appointment. You must not drive after taking the medication, and must arrange to have someone drive you before and after the surgery.