Begin by cooking the meat. Add the oil to a skillet and set the burner to medium heat.
In a small bowl combine all of the spices.
Add the ground beef to the hot skillet and brown it. It won't take too long. Cook it and stir it with a spatula so it cooks evenly. Make sure there is no pink left. Tilt the pan and let the grease/oil fall in the corner of the pan. Then use a spoon to remove all but about 1 tablespoon of it. It will add moistness and flavor.
Next, turn the heat down to medium-low, and then add all the spices and tomato sauce. Stir those ingredients in and cook for 3 to 4 minutes. Then the ground beef tacos meat will be ready to go.
Prep all of your toppings/filing, there are a variety that you can use. Some classic fillings are, cheese, tomatoes, guacamole or avocados, sour cream, lettuce, etc.
You may need to bake your pre-made hard shells if you are using them, or just layout your corn tortillas or flour tortillas. Then fill them up with the meat and other toppings. Enjoy!