Starting Strength is a novice barbell program by Mark Rippetoe. It is a linear progression program involving the three basic power lifts (the squat, the deadlift, and the bench press) as well as the (overhead) press and the power clean.
The program is based around squatting three times a week. Since it is designed for beginners, the idea is to add five or ten pounds to all the lifts every time you do them for as long as possible.
The program is described in Rippetoe and Lon Kilgore's book of the same name. There are variants of the program in his Practical Programming book.