You can view additional graphs by clicking Reports in the shop management panel menu. Use the reports menu, as shown in figure 1, to choose which graph to display.
The sales graph shows your monthly sales (value of orders), while the orders graph shows your monthly number of orders. An example sales graph is shown in figure 2, for a shop that has a peak in sales in the run up to Christmas.
Two graphs are shown, with the upper graph initially showing data for the past year. The lower graph shows all data since your shop started, with the lighter grey background highlighting the time period shown in the upper graph. Click and drag on the lower graph to change the time period.