Recommended links:
Regality theory page by Agner Fog
Wikipedia introduction to meme theory
Konrad Lorenz Institute for evolution and cognition research
Cultural selection on Science direct
Cliodynamics: The Journal of Quantitative History and Cultural Evolution
Cultural selection by Gary Taylor
Cultural Evolution by Alex Mesoudi
Darwinian Sociocultural Evolution by Marion Blute Cliodynamics blog by Peter Turchin