I read all kinds of books (one of my friends jokes that I will read anything that holds still long enough), but sci fi/fantasy is my favorite. I also love books on anthropology and archaeology and other sciences.
This was actually quite fascinating, if a little dry. I discovered so much about the Celts and how much our modern culture is influenced by the Celts. I also never knew just how much land the Celts traversed to get to Ireland and England. I knew the Celts settled in France, but not that they were from Bohemia and, judging by their language, even further east.