Unable to see wireless icon

@wove I purchased TP-LINK TL-WN823N. I am able to see the list of available wireless networks but am not able to connect to them. I downloaded the Linux driver from this link http://www.tp-link.com/us/download/TL-WN823N.html#Driver. Is Linux the correct driver to download? If so, how do I install the driver?

Thanks for all your help in advance.