The clubface sends it and the path bends it. It’s a simple phrase that you’d do well to keep in mind, because it helps diagnose the issues facing your game. All you need to know is your club path (which is the direction your club is traveling into impact) and your face angle (the direction your face is pointing at impact). The way those two elements combine determines the type of shot you’ll hit.
Straight: When the club path is traveling down the target line and your face angle is zero at impact, the ball will go straight. Ideal combo.
Push/Pull: A push or pull happens when your clubface is square to your path, but your path is moving either left or right to your target. So a pull is when your club path is moving left of your target (out-to-in for right-handed golfers) with a closed clubface; a push is when your club is moving to the right of your target (from in-to-out) with an open clubface.
Hook/Slice: Hooks and slices happen when the clubface and path are moving in different directions. If your clubface is open but your club path is moving out-to-in: slice. If your clubface is closed and your path is in-to-out: hook.