ExpressionEngine 2.0: A Quick-start Guide, by Ryan Irelan

If you're looking for some additional ExpressionEngine resources, I recommend the following:

• EE Insider—News and information on ExpressionEngine, posted daily. Be sure to check out EE Insider Tips for mini-howtos posted by other ExpressionEngine developers.
• ExpressionEngine Screencasts—Learn ExpressionEngine by watching. A step-by-step guide to building websites with ExpressionEngine 1.6.8.
• Official ExpressionEngine 2.0 Documentation—For your reference while learning EE 2.0 from the book.