The Center for Publishing Development offers an online resource by John Hitchin on the Opening and Running of a Bookshop. It is written particularly for those wanting to open a bookshop in prime real estate in North America or Western Europe. Obviously some of the advice will be specific to those markets. It is also nine years old. However, I’m sure a great deal of it could be adapted to the Australian Christian retail environment.
Here’s the link: http://www.osi.hu/cpd/resources/jsailor