Conversion Rate Optimization, also commonly referred as CRO in short, is basically the exercise of increasing sales and prospective leads from any website. The added advantage is that it can be done without increasing the percentage of website visitors. By improving or by optimizing the website conversion rate, there is a scope to get more visitors for added activity on the website. CRO helps in attracting more clicks to your home page or website without extra expenditure. This is an introductory tutorial that covers the fundamentals of Conversion Rate Optimization and how to deal with its various components and sub-components.