A Description Logic Primer by Markus Krötzsch, Frantisek Simancik and Ian Horrocks.
Abstract:
This paper provides a self-contained first introduction to description logics (DLs). The main concepts and features are explained with examples before syntax and semantics of the DL SROIQ are defined in detail. Additional sections review light-weight DL languages, discuss the relationship to the Web Ontology Language OWL and give pointers to further reading.
It’s an introduction to description logics but it is also a readable introduction to description logics (DLs). And it will give you a good overview of the area.
As the paper points out, DLs are older than their use with web ontology languages but that is the use that you are most likely to encounter.
You won’t find anything new information here but it may be a good refresher.