To view your sales report you can go to sales > sales report. This will give you the list of all the product you sold over time. You can filter this list by the date of the sales order, invoice or packing list. Since sometimes you won't invoice the sales order on the same day you create it. And even see your selling price, stock price (average purchase price) and your margin amount.
From this list you can create custom reports by filtering any column you want or grouping the report by customer, item, SKU, document number, product category etc.
You can also view various charts, filter the list, or print it, save it on your G-drive, add/remove columns, or export the list to xls.