Great Google Analytics Video: "Top 6 Useful Google Analytics Reports"
I've only paid for traffic to the site one time before 'cuz of a $100 free ad spend I got from Google. I've never needed to, always thought it was slightly "wrong". But coming from almost a complete standstill and needing to formally boost some important information, I'm paying more attention to traffic details, am also relaunching with a more mainstream looking/sounding site that I'll pay for some traffic.
Anyway.. useful vid with some hilarious Arnold scenes thrown in.