You should try google sometime, the answers are out there and not difficult to find, you could probably have found the answer to your question in less time then it took you to write this post (easily)
But I'll repeat the basics of what's out there anyways =) The cables are X+ X- Y+ and Y-
In order to read say the X+ position you source voltage to Y+ and ground Y- (creating a voltage divider) and read the voltage at X+ You can use 4 I/O pins from any micro controller that can be fed into an ADC