Dear Ms. Young,
Assessing the community knowledge and resources is basically doing a needs and resources assessment. Your question suggests you are trying to assess the community's need for knowledge of lung cancer facts and then assess the resources that are already available. Chapter 3 in The Community Tool Box and Toolkit #2 provide guidance for conducting such an assessment. The toolkit provides numerous resources for deciding the best way to collect your information taking into account the amount of money, time and other resources available to you.
I hope that you find these resources to be useful.
The Community Tool Box Advisor