Footwork is weight control. It is correct body position for strokes, and out of it all strokes should grow. In explaining the various forms of stroke and footwork I am writing as a right-hand player. Left-handers should simply reverse the feet.
Racquet grip is a very essential part of stroke, because a faulty grip will ruin the finest serving. It is a natural grip for a top forehand drive. It is inherently weak for the backhand, as the only natural shot is a chop stroke.
To acquire the forehand grip, hold the racquet with the edge of the frame towards the ground and the face perpendicular, the handle towards the body, and “shake hands” with it, just as if you were greeting a friend. The handle settled comfortably and naturally into the hand, the line of the arm, hand, and racquet are one. The swing brings the racquet head on a line with the arm, and the whole racquet is merely an extension of it.
The backhand grip is a quarter circle turn of hand on the handle, bringing the hand on top of the handle and the knuckles directly up. The shot travels ACROSS the wrist.
This is the best basis for a grip. I do not advocate learning this grip...