I am currently running OS X and need to get current to Mavericks. Do I need to download Mountain Lion first or just Mavericks?

What version of OS X are you currently running on your Mac?

If it is less then 10.6, you need to upgrade to it first.

Allan

If you are running Snow Leopard (10.6.8), and your computer meets the other requirements, you can upgrade directly to Mavericks.

To install Mavericks, you need one of these Macs:

iMac (Mid-2007 or later)

MacBook (13-inch Aluminum, Late 2008), (13-inch, Early 2009 or later)

MacBook Pro (13-inch, Mid-2009 or later),

MacBook Pro (15-inch or 17-inch, Mid/Late 2007 or later)

MacBook Air (Late 2008 or later)

Mac mini (Early 2009 or later)

Mac Pro (Early 2008 or later)

Xserve (Early 2009)

Your Mac also needs:

OS X Mountain Lion, Lion, or Snow Leopard v10.6.8 already installed

2 GB or more of memory

8 GB or more of available space

Read Stedman's post.

Allan

https://www.apple.com/ca/osx/how-to-upgrade/

You are welcome.