The law only allows 20 days from the passing of an order to complete a referendum petition (the clock started ticking from 5/16/08 when the order was passed) so time is of the essence.
If you are a registered voter and would like to sign the petition, you have many options. Petition signing locations will be announced, canvassers will be out in force in neighborhoods, but my favorite options are offered by Fall River Community. At that site, you can download/print the petition yourself to drop off at announced locations or volunteers will come pick it up from you to make it really easy!
If you are unable to find a location to sign the petition or no one comes to you to sign......take Fall River Community up on their offer!