Many if not most airline tickets I see take me into Baltimore airport. I understand that this is about 45 miles from DC and there are several options into town. The two most viable seem to be bus service to the Washington Metro or train service to Union Station in DC. As to the Washington Metro I am somewhat confused as to options in regard to any discount / prepaid passes to purchase. Two of us will be there for 7 days in September. I also do not understand why there is both a "District of Columbia" and a "Washington DC" forum - is one better to post questions then the other? Appreciate any advice as to airport and Metro & I thank you. And no, I am not two years old -just lots of questions.