Google Analytics helps you analyse visitor traffic and help you understand your customers. Most importantly it will help you to track your customers journey throughout the purchase cycle. That makes it easier to for you to help your current customers and win new ones.
You will be able to define goals, match customer journeys to site usage and extract actionable insights from the data produced by your website. You will learn when Google Analytics has been installed correctly, what the measurement and metrics mean, and possible actions to take to enhance your marketing objectives.