We are close to the Portland Airport (PWM), so if you can get a reasonably priced flight, that's the best option. That said, sometimes it is easier to fly into Boston (BOS), depending on the airline you are using and the city you're flying from. If you do fly into Boston, you'll need to complete the final leg of your trip on the bus or train. There is a bus that departs regularly for Portland directly from the airport (Concord Coach Lines), but Greyhound also runs between Boston and Portland. Amtrak trains also connect the two cities, if you prefer to travel by train.
If you have been directly informed that this is the case, then yes! Otherwise, you've been invited individually.
This website! We're still filling in the details, and we'll update the pages here as we go.