Regular updates to your browser fix security problems when they are detected, and make your computer safer from those types of attacks. Internet Explorer comes pre-installed with Windows, and Safari comes with Apple operating systems.
Chrome actually updates itself whenever it's running, and you can also check manually for updates under the "About Chrome" menu.Just run Windows Update from your start menu to see if any updates are available.You'll see Internet Explorer updates listed under "Important Updates." If Windows is set to update automatically, then IE will be kept up to date as well.You can also check for Safari updates by looking at the "Software Updates" list from the operating system's Apple menu.
For most Internet users, your browser is your window to the Web.You use it to navigate to Web sites, and it displays those sites for you, allowing you to follow links and explore everything the web has to offer.