I am also in the Travel and Tourism Program and found the airlines to be out of date. Long Live TWA. I remember flying them as a child and loved the 747s(:. Anyways I'm on FlyerTalk and its the bible of travel. You can learn about mergers, how to plan trips and more.
I'm also part of Cruise Critic and have learned a lot about the cruise industry. Both of these forums are free to join(: