This is a really great blog about bees! Some awesome photos of the lifecycles and larvae too.
I loved these videos on swarming, hive splitting and queen cells. They were very helpful.
I am also loving this book and his philosophy to beekeeping. I learned a few things and have refered back to it quite a bit this week.
Natural Beekeeping: Organic Approaches to Modern Apiculture, 2nd Edition Available on Amazon
And these websites were helpful in figuring out what to do for swarming.
Some key words to search to help find information on a hive swarming: