I'll suggest you read the answer to my similar (ish) question here:
http://forum.xda-developers.com/showthread.php?t=2063230
You'll need a 4GB or larger micro-SD card... then follow the instructions. I have GooglePlay (gapps) running on my device.
Be warned that I'm having about 80% success with "device compatibility" for software; Google Chrome doesn't appear compatible, Firefox or Dolphin browsers work fine.
Below are highlights of the incompatibilities
for me; note that i'm not listing the many many others that do work.
Words with Friends works, Draw Me Something crashes.
The new Need For Speed works, Asphalt 7 crashes.
PvZ doesn't work; Doodle Jump does.
Etc