if you already have the position arranged, don't worry too much about the actual certification yet - just start using it if you aren't already - set up a blog and start tracking it, then head over here: http://www.google.com/analytics/iq.html and fill your boots. Set up goals, try some custom reports and get familiar with how the stats become actionable insight. When you can look at the analytics and make decisions about content and conversion techniques based on that, you'll be able to add a lot of value to any organisation.