You awaken in the doctor's house in a town called Goodsprings, he tells you that he managed to save you after someone named Victor dug you up. This quest is similar to your childhood in Fallout 3, as it is simply a means of choosing a character appearance, S.P.E.C.I.A.L., traits, and skills.
Simply follow the doctor's orders to complete the quest.
Before the doctor allows you to leave, literally grab everything you can grab in his house. Grab all the higher priced stuff, like the cigarette collection the doc keeps next to his bed or anything higher then 1 cap.
If your repair skills are 25 or above, you can repair and keep the 9mm machine gun; it's a soda crate near the the doctors science equipment.
With 25 science you can make chems or stimpacks, but you can only choose one option. Although you can find stimpacks on the shelves near the Vit-O-Matic Vigor Tester (S.P.E.C.I.A.L.) Machine and in the hallway near the doc's bed.
Lastly, open the weapon box near the door to find a laser pistol and some ammo. Then walk to the door as the doctor gives you all your belongings that Victor found on you.