Ko's latest: Down and dirty AE tricks
Ko Maruyama is an experience AE artist out on the west coast and he also writes for Digital Media Net. While I haven't met Ko yet personally, I do know him by reputation and in the community and he is an excellent teacher and community proponent.
Check out his latest down and dirty tutorial on creating volumetric light. It's short, sweet and effective. Get it right here: Ko's Volumetric Light Tutorial