In many photo clubs and professional fine art photography, is very common to show "conceptual" photo essays or photo series.
That is, there is a unifying idea behind a compilation of images, and often artists do not give any clues at all to reveal their artistic concept(s) by not assigning any (meaningful) titles to photos, publishing confusing statements, etc.
As a result, often these series of pictures appear incomprehensible, boring, or uninformative. This holds in particular, when spectators do not know (or have no chance to get to know) the concept behind the unifying idea of the series.
Can you provide a good general introduction for conceptual work in fine-art photography? How to recognize it, how make it accessible for a lay audience?