UPDATE: They hit the limit of 5,000 downloads, so this is already gone!
When you Like The Amazing Avacado on Facebook, you will have access to a coupon for a free Avacado. Just click the Free Coupon and Download icon to get yours.
(Now, I am sharing this, but because it is a pdf file and has no store reference on it, it really could be hit or miss as to whether your store accepts it or not. So, use this one at your own discretion).