Clearing Browser Data

Firefox
Firefox, Preferences, Privacy & Security, Cookies & Site Data, Clear Data.
Firefox, Preferences, Privacy & Security, History, Clear History.

Safari
Safari, Preferences, Privacy, Manage Website Data, Remove any sites you want to clear the data for, or remove all.
Safari, Clear History

Chrome
Chrome, Clear browsing data
Chrome, Preferences, Privacy and Security, Clear browsing data, check the boxes for what you would like to clear.