Because chile peppers contain volatile oils that can burn your skin and eyes, avoid direct contact with them as much as possible. When working with chile peppers, wear plastic or rubber gloves. If your bare hands do touch the peppers, wash your hands and nails well with soap and warm water.
To warm tortillas, preheat oven to 350°F. Stack tortillas and wrap tightly in foil. Bake about 10 minutes or until heated through.