"General familiarity" refers to having a basic understanding or knowledge about something. It means being somewhat familiar with a subject or having a general awareness about it without being an expert. Full definition
This section provides introductory material to obtain general familiarity with the subject. (fairmark.com)
Legal scholars have only general familiarity with the first movement and very little familiarity with the second. (slaw.ca)
The two semester basic course can no longer do all it is asked to do because students simply don't have the sort of general familiarity with the content of the Bible they once had. (religion-online.org)