I'm staying in Boston this weekend for 3 days. It's going to cost us $105 bucks to park our car at our hotel, so we thought we'd take the T from somewhere outside the city, and park our car there. We're staying at a Hilton in the Back Bay area (Boylston St, Fenway all near). What's the best way to do this (I need help with the T....it's confusing the heck out of me). I think there is a stop in Danvers or Newburyport or something....HELP. Thanks!