Even if you normally drive a car every day, consider taking a bus, MAX train, or the Portland Streetcar next time you need to go somewhere. Why? There are plenty of reasons. With gas prices being what they are, it's an inexpensive way to get around. What's more, when you take public transportation, you never have to worry about parking and instead of spending your commute time driving, you can read a book or catch up on the day's news. Portland's TriMet system is easy to use. I've compiled a tip sheet to help you get acquainted with the system.