If you find a way there, go north to Portland, Maine. It's about an hour on Interstate 95 from Boston. If you do go, make sure you spend an evening at DeMillos on the wharf... absolutely the best seafood restaurant in the area! (seen here:
http://www.dimillos.com/restaurant/ ). It actually floats...
Here's an Amtrak schedule and fares between Boston and Portland:
http://www.amtrakdowneaster.com/schedule/full ...
You can also catch the Concord Coach Bus Line right at the Boston Logan Airport.
We live in the western U.S., but have close friends in New England and go as often as possible.
The "high season" for the Leaf Peepers (tourists that go for the Fall colors) begins as early as September 15 and runs to late October. The weather is beautiful that time of year. 60 to 70 (F) temps in the day and only down to maybe 50's at night.
I'd also suggest hiring a taxi once in Portland to take you about 15 miles to Freeport... the home of L.L. Bean... a huge sporting goods and clothing store that never closes (no locks on the doors) seen here:
http://www.llbean.com...qs=3006413_pmd_google .
The coastline is spectacular and don't miss the many Lighthouses, especially Portland Head (seen here:
http://lighthousegetaway.com/lights/maine.html ).
Welcome to the U.S., by the way!