A:AnswerIf your headphone only has 3.5mm AUX Plug, you need a "USB-C to 3.5 mm Headphone Jack Adapter". apple store has it for $9. You can also find some cheaper ones(might not be as good quality as genuin apple version) from Amazon.
A:AnswerYes, the Apple - 11-inch iPad A16 chip with Wi-Fi - 128GB is a touch screen device. As an accessory, you may also choose to add an Apple Pencil. I got the pencil with mine but honestly I rarely ever use it.