Boil the pasta - I usually use two or three different kinds of pasta, simply for appearance. Drain the pasta. Rinse with cold water to cool it off quickly if you'll be eating it right away. Pour pasta into mixing bowl. Add salt, pepper, seasoning salt, minced garlic, black olives, finely chopped onion, and parmesan cheese. Pour Ranch dressing over the top and mix well. Add more Ranch dressing until it looks right. If you are serving this later in the day, or the next day then you will want to add more Ranch dressing just before serving. Enjoy!!