You need as much exposure as possible to grow your group. Many cities have gay and lesbian newspapers which list events. They rarely turn down a bi event listing, even if they are not otherwise bi-friendly. Some will also allow you to write an article describing your new bisexual network. Some places have a weekly newspaper or a weekly pull-out section of a daily paper which provides free calendar listings.
Public Events Make an eye-catching banner with the group's P.O. box or phone number.
March with it in your local Pride Day march. Bring it to civil rights demonstrations and other political events. This will get your name out in the community. Youth centers, student centers, women's centers, community centers, laundromats, coffee shops, libraries, etc. Computer Networks Someone in your group will have access to computer networks.