I just found out that there are some relatively nearby casinos that host some low entry tourneys (<=$200 buy in) Is there a site that has a relatively comprehensive listing of these tourneys? If not how do people find out about them other than word of mouth?
Your best source of information will be the casinos themselves. Most casinos have web sites, and many of those include tournament schedules for their poker rooms. Otherwise, you can call them, and they can tell you of any upcoming events.
Ante Up Magazine's web site has an index of poker rooms by state that could be of use in your search for nearby casinos.