How do I download Yosemite on my imac? I have an iMac (newer than 2007),and I need to run this year's version of Turbo Tax.  I am getting a message indicating that my current OS X, which is 10.6.8, is not sufficient to run this year's Turbo Tax (premier version).

I have tried to download Yosemite and have been unsuccessful.  I assume that once I download a new OS, that it will appear in place of the 10.6.8 when I click on the Apple icon at the top left side of my screen and ten click on about this mac. How can I download Yosemite?
Check your iMac model and the date.
In About this Mac (here is mine)

Yosemite requires iMac (Mid 2007 or newer)
Log in App Store and get it from there. The download process can take very long time, a hour or more (it is &gt; 5 Gig file), depending on your Internet speed.
Once it is done, find the file called &quot;Install OS X Yosemite.app&quot; and click on it.
If Yosemite does not work for you then get the 10.7.5 (minimum required) for TurboTax 2014.