I too have a Nesco. It did not get used at all last year or the year before because of COVID. The plan is to put it to good use again this season.
Most dehydrators work very simply by providing low continuous heat to fruits, veggies and meats to dry them out and preserver the food. They are simply built many with an automatic timer. The temp is usually around 15-120 degrees.
Before I bought mine I over thought the process big time. Only to discover that it was so simple. You may see a rise in your power bill by a few dollars with continued usage. Most new Dehydrators come with some great tips and ideas.