How do you make your chicken or beef stew taste good? what are the steps to cooking a simple stew?

i am new at cooking ive tried everything added anything as far as onions garlic tomato to my foods such as stews, am i doing anything wrong.. is there a process?... do i first add the oil with the onions garlic peppers wait for it to simmer then add the chicken/beef then potatoes!!! helpppp can someone help me with the steps on how to make a simple dish... i need the basics!!! and how to change flavors, same flavors are boring!!!