instructions in ARM mini2440

Forum: No OS
beginner 
Hello everyone
I am using a ARM mini2440 kit and I am new to the kit and also to hardware
programming. I tried to run the led test program which came with the cd. It
was fine but I am not able to understand some of the instructions. Is there
any site or any other means where I can understand these instructions and
learn how to program hardware

Thanx

AnatoliyBesplemennov 
It's easy to do.
Here is working example from STARTOS:

#define rGPBCON    (*(volatile unsigned *)0x56000010)  //Port B control
#define rGPBDAT    (*(volatile unsigned *)0x56000014)  //Port B data

int     data = 0x06;
int    i;

void Main(void)
{
  Buzz(7000, 10);

  rGPBCON = 0x155555;
      
     for  (i=0; i<30; i++)
     {       
       rGPBDAT = (data<<5);
       Delay(200);
       data =~data;
  }

    Exit();
   
}