1. Oven Interior
You should clean the interior of your oven three to four times per year. Spills and drips should be removed as soon as possible, as they will smoke and may eventually catch on fire. Avoid detergent/soap use inside of an oven for both self-cleaning and non-self-cleaning ovens. DO NOT SELF-CLEAN!
MAKE SURE TO READ YOUR USER CARE MANUAL FOR OTHER TIPS THAT ARE SPECIFIC TO YOUR APPLIANCE.