Conversion rate is one of the most important factors in successful work of the website.
How can you learn if it’s build good and useful for the customers?
Try to do A/B testing for your site.
I recommend this site for that http://visualwebsiteoptimizer.com.
You can take trial period of 30 days to understand how it works.
You don’t need to change html code of your site.
All the changes you will do with help of the software.