Clearing your browser cache (aka temporary internet files) will clear out leftover junk associated with normal use. It is a good thing to try if a website is suddenly not working properly. Please realize that restarting your device (full power off) once a week will also help with general usage problems.
If you needed instructions for a computer's internet browser instead, go here.
Safari Browser On iPod/iPad/iPhone
From the device's home screen tap the Settings icon.
Choose Safari from the menu on the left (this may be at the very bottom, and you may need to scroll to see it).
Tap Clear Cache
Chrome Browser on Android devices & Nook Tablets
With browser open, tap its menu key. This is in the upper right corner and looks like 3 vertical dots.
Choose History, then tap the "Clear Browsing Data" button (usually appears at bottom of screen).
A small window will pull up - delete at least the browsing history, cache, and cookies/site data.
Kindle Fire's Browser
With the web browser open, tap its menu key. This is usually in the upper left or right corner, and looks like 3 lines.
Choose to Clear Cache OR History. Some models may need to choose Settings first to see this option.
Nook Color's Browser
With the web browser open, tap its menu key. This is in the upper right corner and looks like a lines with a down arrow next to it.
Choose "More Options" then "Settings."
Scroll down to the "Privacy Settings" area.
Clear (at least) the cache, history, and "all cookie data."