I've just started learning about Unix and the Terminal in Mac OSX. I've found a few good starting resources, such as OSXFAQ - Technical News and Support for Mac OS X, but most of them are based on OSX 10.2 or thereabouts. Does anyone know of any good tutorials that specifically address Leopard? I've been told that there have been significant changes even between Tiger and Leopard, so I'd like to get something as up-to-date as possible. I don't mind going the long way around, learning from earlier tutorials and adapting, but obviously somewhere along the line I'll need to learn what's different in the current version. Thanks.