This setup video covers linking Google Analytics with your eStyle Central account:
https://www.screencast.com/t/oTZsqTLDg7
The first part of the video shows you how to sign up for Google Analytics if you don't already have an account. When creating a new account it will take you directly to the search engine tracking code section after signing up so you can skip the "Sign Into Google Analytics" section.
Sign into Google Analytics at google.com/analytics. Start the video tutorial at 1:20.
Start the video at 2:13 to see how to paste the tracking code into your eStyle Central admin panel.