Greg Pollack has written a Rake Tutorial.

A Rake Tutorial from the “Rails Guy”

Remember this (and this, this, and this)?

Gregg Pollack (the “Rails” guy in the above videos) has written a delightful little rake tutuorial that you might enjoy. You can find the tutorial at http://railsenvy.com/2007/6/11/ruby-on-rails-rake-tutorial.