To get detailed reports about visitors to your store you can use
its free tool and the best in the world to get reports about visitors to your store ... To use this tool open a free account through this link
Then copy the Tracking Code from your account
Then go to the control panel of your store then click on the settings then advanced settings then click on the custom code then put the code in the header Scripts:
Next images to show where can get the code from your account and placed it on your store ....
Then you can open your Google Analytics account to see how many visitors to your store ... Next image for clarification