This is so easy but everyone thinks it’s difficult!!!
(It used to be a lot harder, believe me. It used to be called Google Website Optimizer and you had to put code in three different places.)
Now all you have to do is go to Google Analytics and, on the left hand side, under Content, click Experiments.
All you need is three pages. Your Original (squeeze page or sales page), The Variation (of the original squeeze page or sales page) and the Success Page (the page the visitor ends up on when they have done something you wanted them to (sign-up success page or thank you page after a purchase).
Once you’ve entered those 3 URLs you have to put some code into one of the page — the Original.
And that’s it!