Hi I have an early 2007 iMac that I'm not able to update to Yosemite. The iMac works pretty good for my needs. I mostly use my iPhone or iPad unless I need to do tasks that require a desk top. The problem is since I'm not able to upgrade my iMac I'm not able to take the full advantage of the Apple ecosystem which I want too. Unless I'm missing something. Any suggestions on how I can make the best out of the Apple ecosystem work in my situation? Thanks!