These basic protection rules, I got from this article an article on Sprintout and Half-Roll passing from SmartFootball.com
Backside Tackle: Turn and Hinge
Backside Guard: Turn and Hinge
Center: If covered or shade to callside, reach. If uncovered with no shade to callside, turn and hinge.
(Get depth as you turn and hinge)
Playside Guard: Reach, plug hole/backside
Playside Tackle: Reach (Note: On any reach block, if you are unable to reach, ride your man out to the sideline. Don't get beat outside trying to reach hopelessly. A man pushed out of bounds and kept on the LOS is just as effective.)
RB: Take two steps to callside, looking at outside rusher. Look for OLB or outside rusher to come shooting, block first color that shows. If none show, check middle and then backside. You are the QB's bodyguard. Step to rush, do not wait for him to get to the QB.
Sprinting right from under center: The QB's first step should be at 6 o' clock to help him gain depth, he should then take 4-6 more steps (depending on how you protect, where you contain point is, how long the routes take to develop, etc) before sticking his right foot in the ground attacking the LOS. To clarify, the QB should stick his right foot in the ground on his 5th or 7th step. I recommend placing a cone where you want the QB to stick his foot in the ground and attack the LOS. Both a left handed and right handed QB should carry the ball on his right shoulder, which is away from the defense.
Sprinting left from under center: Everything remains the same as sprinting right from under center for the first 5-7 steps, except the ball should now be held on the QB's left shoulder. Like I mentioned earlier, this carries the ball away from the defense. After sticking the left foot in the ground to attack the LOS, the QB should transfer the ball to his right shoulder to a good pre-pass position.
Sprinting left from the gun: same as sprinting right, only the QB transfers the ball from his left shoulder to his right after the 3rd step.