not knowing what to expect, as with any new appliance, i was pleasantly surprised at the ease of operating my new samsung appliance! i figured out the minutes/up down arrows; the only thing that temporarily stumped me. otherwise, it's pretty much self explanatory. the size is great; (15.5 x 15.5 interior so jelly roll pan fits!)we're remodeling the kitchen, so i can still bake, microwave, air fry; what used to take 2 countertop units is now done in one. i plan to set it on a shelf just under the counter in the kitchen remodel. such a great product!