Hey everyone. I have a refurbished 2011 MacBook Pro currently running Mavericks. I mainly use it for graphic stuff (I have Adobe CS6). My roommate and I used to play World of Warcraft and she wants to get back into it, so I thought I would download it and check out what's been going on with Legion. Well apparently WoW is going to be ending support of 10.9 soon, and the game won't run anymore. When I launched it, it was stuck on a loading screen for forever and would not do anything. So I figure I should upgrade to a newer version of OSX. I can't do Sierra because apparently I have to do Yosemite and El Capitan first, however, neither of these are on the app store anymore. What can I do? Thanks in advance!