A BBS, or bulletin board system, is a program running on a computer which you can access with a modem. BBSs often let you get programs to use on your computer, exchange messages with other peope, and play games.
BBSs usually serve only a particular city or region.
They are a good way to get answers to questions, meet other people and locate programs called shareware which you can use on your computer. Sometimes companies have BBSs so that their customers can call in with a computer to get information from the company.