Is "steer into the slide" the same thing as the above comment to "steer where you want to go"? I literally don't know what steering into the slide means. If my front end is sliding right and my back end is sliding left then I should steer which way?
That's counter-intuitive for many people as typically you want to actually go right.
If you have a manual transmission and you know what you're doing, in some situations you can downshift and use the engine to slow you down more. But in my experience, it's a "nice to have" vs a must for passenger vehicles. (different story for big trucks)
(edit: depending on how far you've already rotated, but I'm speaking as if the front of the car is still ahead of the back of the car)