Oatmeal is an amazing way to start your day, but it doesn't (and shouldn't) taste horrible.
There are two ways to go about getting your daily oats in. First is actually cooking them. If you choose this option, purchase Steel-Cut oats as they are the least processed. I will usually make a few extra servings and put it into the refrigerator for the entire week. Then just break it out and heat it back up.
To cook, it takes 15-20 minutes to cook on the stove, and you use 1 part of steel cut oats, to 3 parts water. So if you use 1/2 a cup of oats, use 1 1/2 cups of water. The longer you boil them, the thicker the oatmeal will get so that's a personal preference.
Second is the non-cooking version, which is what I have been doing recently and it really works for me and saves a TON of time. I either purchase the regular cut oats, or a mixture of ancient grain oats and soak them over night in a 1/2 almond milk and 1/2 water concoction. Sometimes I will add in some peanut butter, raisins, or any other items that won't get all nasty if let sitting inside. If you're going to add fruit, keep that to the side and add it just before you eat it.
After combining these together and mixing them up, put the in the refrigerator overnight. This helps soaks the grains which allows them to absorb the liquid, it helps with the "anti-nutrient" type issues that you get from eating any grains because you're basically "Sprouting" the grain, and it will prevent a lot of issues in your digestive tract if you're sensitive. The great thing is here, it takes like 5 minutes to make your entire breakfasts for the week, and you can decide if you want to heat them up or eat them cold.
*Important* Top your oatmeal with walnuts, berries, cinnamon, a pinch of stevia, or even a small amount of grade B natural maple syrup or Unfiltered Honey. If you're trying to eat it plain, it will taste like CRAP! Some other things I've added to spice it up are peanut butter, almond butter, egg whites, or protein powder.