Tracking statistic on Google Analytics is easy to add.
MENU-->Settings-->C advanced-->Configuration-->My Store-->Tracking tab
Google will give you a tracking ID - starting with UA-xxxxxxx
Enter that ID into the field for Google Analytics, and a few hours later Google will start gathering your data.
You can see the status and progress it's making.
Tracking Adword campaigns requires a Google conversion ID and a supplementary module from us.http://www.bgsys.dk/tracking_modul-p-150.html
This is an extra paid module offered by us. Once it is activated you can enter the tracking details from admin:
MENU-->Settings-->C advanced-->Configuration-->My Store-->Tracking tab.