new guy trying to build a small cnc

[bennettk90]

hi all, i am trying to wrap my head around the arduino gcode and all that. i get the basics of the arduino uno, but upon using the cnc shield v3.0 i cant find a library of commands or pin numbers related to the cnc shield board. i found a pinout online but it really doesnt show me anything. i dont think it is the correct version. am i supposed to use the pin descriptions that are printed on the board for the code? ex. hold, resume. also there are two pins for each button function are they + and -. i understand guys probably sick of us diy guys asking basic questions but i cant find squat online about this.
any help would be appreciated