Analytics makes it easy for you to track how many conversions you are getting from your social profiles by using Google Analytics. Once you have installed Google Analytics, you need to collect data, but if you are like most of your clients who have built a large audience, you will have data points on your reports that are actionable and very insightful. Google has a great support center that answers most questions that are related to trouble shooting analytics and it is a great learning resource.
To know more read the article by Sergio Aicardi, CEO of Miami SEO Company, from http://socialmediatoday.com/sergio-aicardi/2358246/tracking-social-media-success-google-analytics