As a marketing professional this is even more difficult because you are responsible for showing results to your clients. One fantastic way to track your results is to use UTM (Urchin Tracking Module) codes.
UTM code is a simple code that you can attach to a custom URL in order to track a source, medium, and campaign name. This enables Google Analytics to tell you where searchers came from as well as what campaign directed them to you. A common use of UTM code is to create a vanity URL for each offline campaign, and then redirect that URL to whatever forwarding address you assign to it — most likely your main domain. This will give you the ability to track how a weekly newspaper ad, coupon, radio ad, or TV commercial is working without having to create custom landing pages for each campaign. By creating a separate UTM code for TV commercials and print ads, for example, you can get data on which generates more traffic, conversions, etc. Furthermore, you can track not only the source and the medium (radio, newspaper, coupon, etc.), but even individual campaign names like “Fall Chevy Sale.”