The Proper Grip
In the first photo we see a properly relaxed pool grip viewed from the rear. Note the hand wrapped around the butt of the cue to cradle it without squeezing, as shown by the space between the top of the cue and the palm of the hand. The cue rests in the front three fingers with the thumb and index fingers touching near their tips to keep the cue in place. Note also that the forearm hangs straight down with the hand hanging straight down from it. Aligning the elbow and wrist directly over the cue makes it possible to keep the arm relaxed for a straighter and more efficient stroke. A good grip is nearly no grip at all.