Facebook Integration for Android Game

Hello guys,
I have created a 3rd person shooter game for android devices (and iOs) using Unity. Now i want to add facebook integration to it. To invite friends/ view high score etc and we are also adding multiplayer capability in the near future. I went through a lot of links and I am pretty confused where to start. Someone please help me with integration facebook/friendslist to my android game.

Thanks a lot,

Facebook should be releasing the their API plugin to the Asset Store soon. It will be free too. A downside is that it seems to only support apps that use the Unity web player(browser apps).

Here’s a link to check out till then: Facebook and Unity Tutorial - Part One - Paladin Studios

Source: Unity and Facebook are now in a Relationship ... and it's Awesome! | Unity Blog