Google Analytics Quick Start Guide
Very useful quick start guide to using Google analytics. This 100% free tool can be used to track your adwords and other PPC campaigns in addition to lots of data about your traffic.
Google Analytics is a free, hosted web analytics service that provides useful data for website and marketing optimization. Site owners and marketers can make better informed decisions about their sites and campaigns by using metrics from Google Analytics reports. Google Analytics works by collecting information about your site traffic and advertising campaigns, combining this with e-commerce and conversion information to provide insight into the performance of your marketing efforts and site content.Anyone can sign up using a Google account by visiting http://www.google.com/analytics/. You don’t even need to have an AdWords account beforehand.
http://adwords.blogspot.com/2008/01/google-analytics-101-part-1.html