Whereas many commercial driving manuals focus on "tricks to pass the test," the DVSA guide focuses on . It is the textbook from which driving examiners set their tests and the manual advanced drivers (such as those pursuing the RoSPA or IAM qualifications) study religiously.
This covers the "Cockpit Drill" (DSSSM: Doors, Seat, Steering, Seatbelt, Mirrors). The PDF diagrams here are excellent for memorizing the blind spots. the official dvsa guide to driving the essential skills pdf