If you want to learn more about becoming a Marine Officer, you need to find your local Marine OSO (Officer Selection Office). There are 60 or so scattered across the country. You can find your OSO using this list.

The Boston OSO is located at:
495 Summer Ave, 1st Flr, RM 107
Boston, MA 02210
617-753-3009/3011
http://bostonmarineofficer.com