Mix together the flour, warm water and salt. If mixture is too dry add more water one tablespoon at a time. Roll dough into balls. You may roll out by hand or use a tortilla press. Line tortilla press with a plastic bag that has been split down the sides. (You may use waxed paper instead.) Fold the plastic bag over the dough ball and press flat. Remove tortilla from the plastic and place in a nonstick skillet that has been brushed with vegetable oil. Cook, flipping several times, until cooked through. Remove to a dish and cover with a wet towel to keep from drying out while you fry the rest of your tortillas. Keep towel very damp as the tortillas canl dry out quickly.