I am trying to watch a video on you tube but get a message that i need the latest version of flash player

when I try to watch a video on youtube I get a message that I need the lastest version of flash player but then a box pops up that Safari can't identify the website...what should I do?.....also got that box saying Safari couldn't identify this web site also but chose to click on continue

Thanks again in advance

Cori

By the way...my Mavericks install wouldn't work...rats lol