Or, how the double stranded DNA in the nucleus is transcribed to the single stranded RNA that will later serve as a template for protein manufacture.
I just had a class on the complexity of transcription factors in relation to enhancers and how ridiculously complex this whole network of additive factors is. I understood about a quarter of it.
Maybe this will help: http://www.nature.com/nature/supplements/insights/transcribing/index.html A whole segment in Nature about transcription.
Right now, however, I am feeling /very stupid/.