Membership in the BFRO is by invitation only. Invitations happen after a person meets enough existing BFRO members who can recommend an invitation.
Until recently your only option for meeting BFRO members was by attending BFRO expeditions. Now you can meet members at BFRO town hall meetings as well.
The BFRO hosts expeditions in the U.S. and Canada which are open to non-members. These expeditions usually last four days -- Thursday to Sunday. You can participate if you're able to camp in the woods for a few days. See the locations and dates on the 2017 Expeditions schedule page. On that page you will also find a link to the Expedition FAQ page with registration instructions and more details about these trips.
The BFRO's town hall meetings in the U.S. and Canada are similar to the town hall meetings seen in the TV series "Finding Bigfoot" (which are organized in conjunction with the BFRO). These meetings will happen annually in most states. A few states will have a meeting in more than one part of the state. For more information please see the 2017 Town Hall Meetings page.