Hi

I'm an absolute beginner with mining and Bitcoins.
I had a Raspberry Pi lying around and thought I could use it to mine, so I bought an Antminer U3, and now I'm clueless on how to use the damn thing. 

I made all updates on my RaspPi but I dont know which version of cgminer to use, how to install it or how to configure my Antminer.

Anyone know a good tutorial? Anyone can help me? I feel quite lost.