The unit may seem intimidating at first. Every time I try a different function it walks you thru it with the greatest of ease. For example we had been preheating wasting time. So last night we heated Taco shells with no preheat instruction allows you to set oven to 325 place shells in oven hit start and brings up timer then start cooking so easy. & minutes later oven hot and shells perfect. No wasting time preheating. Thanks Frigidare