For several weeks now Adsense has been putting a new web interface in beta. I think the new one is more friendly and easier to decode. On the main landing page you can see, at first glance, how much you are earning for the day, month and the previous month. It also displays the finalized earnings, and how much you got recently paid.
Reports are accessible in the Performance Reports tab, where you can drill down and analyse more. You can check data such as number of clicks, click through rate, cost per click and estimated earnings for the day.
You can manage and create new ad units in the My Ads tab, and allow and/or block ads from your network through the Allow & Block Ads tab.
