I like growing queens, it's the best part of beekeeping for me.
Grow your own, you'll learn more, faster and more deeply, about bees and beehives.
I highly recommend reading those links of Michael's, the old books. They'll teach you more than the newer queen rearing books, IMHO, then jump in and do it this spring after danger of frost. Near or after spring equinox is a good time in most places.