In general, cookies are used to retain user preferences, store information for things like shopping carts (if available on the website), and provide anonymous tracking data to third-party applications, such as Google Analytics that gives to the administrators traffic information and social media (facebook, pinterest, etc.)
As a rule, cookies will make your browsing experience better. However, you may prefer to disable cookies altogether from all the websites you visit by properly adjusting your browser. We consulting the "Help" section of your browser or search "About Cookies" with your browser name to find the relevant instructions.
However, if you deny cookies you may not be able to use all of the features offered, you can not save your preferences and some pages may not display properly.