Not to be dramatic but eating corn tortillas straight from the package should be a criminal offense. They absolutely must to be warmed first to avoid them being cold and rubbery. Luckily it's quick and easy to do and there's a couple different methods you can try. The first way is to wrap them up in a damp paper towel and microwave for 30-45 seconds. The second way is to preheat a dry (no oil) cast iron pan, place the tortillas into the pan one at a time heating both sides until they start to get some color. The last way, and my personal go-to method is to place them directly on top of a gas burner over medium-low heat. Watch them carefully and as soon as they start to blacken around the edges–about 30-45 seconds–flip them over and repeat on the other side. The result is a soft and tender tortilla with lots of flavorful smokey bits.