I never thought this question would come up; it’s like winning a car and asking, "So, how do I drive it?"

A lucky person can win a car in the lottery so it is not mandatory for him to know how to drive.
:://:::
Look, you might not know how to drive a car, and that's perfectly fine. But you already know what driving is. If someone handed you the keys, you probably wouldn't ask, "So... how do I drive?" You'd understand that learning to drive is your responsibility, not the responsibility of the person giving you the car.
It's the same idea here. You can't expect them to hand you the free bets "and" give you a complete lesson on how to use them. I don't mean that as criticism—it's just one of those things that naturally falls on the user to figure out.
On top of that, I even took the time to send you the official guide explaining exactly how free bets work, so I was a little surprised that it seemed to go unnoticed. Hopefully, you'll get the hang of it, and more importantly, I hope you manage to turn those free bets into a nice win.