When your books are distributed wide, you will be bombarded with sales spreadsheets from vendors every month.
What to do with them?
There are a number of options to aggregate your sales data so that you can make sense of them.
One of those options, which I recommend in Self-publishing Unboxed, is a program called Trackerbox.
Trackerbox and allows you to see your sales per country, per retailer, per series, for any time period that you choose. It gives your sales in all the different currencies and also tallies pages read if you are in KU. It gives free downloads. Other than the usual venues, like Amazon, Kobo, iBooks and Nook, it supports formats from more unusual sales sources like Bundlerabbit, as well as print books, audiobooks, and even a user uploaded spreadsheet option for hand sales at cons.
Trackerbox is a program that you download and use on your computer, rather than give all your passwords to run online. Therefore your financial data, and your passwords, are secure.
Trackerbox has only been available for the PC. But Mac use amongst writers has exploded, because there are so many great programs for the Mac. The owner is now running a kickstarter to make a version of Trackerbox for Mac.
You can support the kickstarter and will get your version of the program when it is done.
So if you use a Mac, why not support the kickstarter now, so that this version will become a reality.