I have an amateur interest in combinatorial game theory and have an old blog with some basic exposition on the subject (see website). I also was the first person (out of two at the time of writing) with a CGT tag badge here on MathSE.
If you need to contact me, use the e-mail address at this link.
Many of my high voted answers are not my best/most interesting answers. A better approximation for my best answers would be my longest answers.