Check: http://livedocs.adobe.com/coldfusion/7/ Since much of ColdFusion is self contained in tags and LiveDocs typically has code example in the CFML reference for tags and funcitons, I find I rarely go to other sources. If you can afford a bit of cash, try to find one of recent versions of ColdFusion Web Application Construction Kit (CFWACK). It's a valuable resource to new CF users.
I use livedocs all the time myself, but I'm not sure if it is a good place to 'learn' ColdFusion! Sort of like throwing some into the middle of the woods nekkid' and asking them to build a log cabin...