How to use Content Experiments in Google Analytics
Create an experiment
Name it appropriately
You set your objectives (you can have more than one but for starters, I recommend doing just one objective)
Percentage of traffic to the experiment. I recommend leaving it at 100% of the traffic for your first experiment.
Then you start configuring your experiment!
Google’s urls:
https://support.google.com/analytics/answer/1745152?hl=en
Note:
The Experiments API is something different and is not covered on this page.