We have a great public transportation system here in the Portland Region; it’s called TriMet and the website is trimet.org. It includes the MAX light rail system that covers several cities around the Portland metro area (including Beaverton), the Portland Streetcar(s), and buses. If you go on the website there is a tool called the Trip Planner that will tell you exactly how to get wherever you are going. You put in where you are at and where you want to go, whether you want “Train Only”, Train + Bus”, “Bus Only”, etc, and it routes you right there. Beaverton has the Red Line Max and several bus routes, so there should be no problem getting around.
I hope that answers your question, please let me know if there’s anything else I can help with!