website to download ox x yosemite?
I need to upgrade my OS to 10.7 or higher to use Google Chromecast. Can someone help me find a website to download the OS 10 Yosemite upgrade? I went to Apple site, but there is no download button. I clicked on everything I could find, including the big "X" in the corner, but nothing worked. I tried in itunes also, but nothing worked.
MacBook, Mac OS X (10.5)