Installing VMware on MacBook - Free version
VMware Player is only avaiable for Windows and Linux, not OS X. To install Windows 8 on your Mac, you will need to purchase VMware Fusion.

From VMware Workstation Player (formerly known as Player Pro):


  VMware Player is the easiest way to run multiple operating systems at the same time on your PC.


You do have a couple of free options:


Virtualbox is a free program that will allow you to install Windows 8 alongside OS X in the same way that VMware Fusion works (you can run both OSs concurrently).
Apple's own Boot Camp software will allow you to install Windows in a separate partition. The downside to this is you have to reboot your computer to switch between OSs, but the upside is that you can run more graphically-intense programs (i.e. games) at native speeds.