Follow these simple instructions to download your csv file from your Bitstamp account.
In your Bitstamp account, click on Deposit at the top of the screen.
Click on Deposits older than 90 days.
Click on Export.
Enable all transaction types and all currencies shown on this page.
Select a date range that covers your entire transaction history on Bitstamp.
Click on Export Selection.
Now go back to CryptoBooks and press the Add Connection button on the Connections page.
Select the Bitstamp icon by filtering the list usign the Exchange CSV tab or digit the name in the quick search box
Select the CSV connection type from the drop-down menu, then press Next step
Give the connection a name of your choice, choose the default category and press Next step
Press Select file to import your file, then press Upload file and import transactions
Done! The synchronization between Bitstamp and your CryptoBooks account has just begun!