Miles can be spent through appropriate channels with accordance to the rules provided by Turkish Airlines.
You can get a Bonus ticket for Turkish Airlines flights.
You can register your bonus ticket in the Turkish Airline's Personal Cabinet or Mobile App.
The airport costs must be paid by the customer.
No, it is not possible to transfer the miles to another card.
To confirm your membership, you must purchase the first ticket in your own name only. You will then be able to buy bonus tickets for other people.