Reading Current Transformers

I am very new to Rabbit. I have been having a lot of trouble finding a good starting point to learn how to do a lot of things.

I am trying to read the voltage from a current transformer. It is an AC sine wave at around 60Hz, 0-3 volts. I would like to take a few hundred ADC samples at around 10,000 Hz, and then use the data to find the current on the line.

Since there is negative voltage, I know I need to use a differential voltage setup. Can anyone point me in the right direction?