pj - Bonsai, say "bone-sigh", can be created from many types of trees and plants. To pick a good beginner tree that can be grown both indoors or out when you live in Minn, Minn. or in Cedarville, NY as I do, can be a real challenge. Trees that are native to your area are cold hardy, requiring a cold winter dormancy period and a springtime wake up. A tree that will thrive indoors in Minnesota is almost always a native of the tropical regions of the planet - warm year round like inside your home, but with added light and humidity.
Rather then suggest a tree that can be both I would say try a distinctly "indoor" ficus or jade to practice on and learn from. Read all you can on these tree types which are easy to grow near a good window. Their requirements are few, and cost is low. Work your way up over time - learn from forums like this, and, if you are inspired, contact the Bonsai Society in Minneapolis for more guidance.
Best of luck - glad you came here with your question.