I am also a new beek. I just ordered bees from Highland Bees (http://www.highlandbees.com/bee-packages-and-nucs.html). A little closer to home is Dakota Bees in Wheat Ridge (http://www.shop.dakotabees.com/Bee-Nucs_c29.htm). The rest are further away but you can find more here (http://www.highlandbeekeepingclub.org/hlbkc/resources/86-2/) Most of them have just started selling, so call, find out who you like, and order quickly!
Tim