Switch Input to Arduino Serial to Arduino Serial Output Led High or Low.

I would like to know where I can go and look to see how. To take the (Tx Code) program and add the (TxRx11 code). Take the (Rx code) and add it to the (TxRx code99).

I am looking to send the serial data with the xbee's using tx and rx.

((RxTx11))

//TxRx11 Code..........



#include <SoftwareSerial.h> 

#define Rx    6			    // DOUT to pin 6
#define Tx    7			    // DIN to pin 7
SoftwareSerial Xbee (Rx, Tx);

void setup() {
  Serial.begin(9600);               // Set to No line ending;
  Xbee.begin(9600);		    //   type a char, then hit enter
  delay(500);
}

void loop() {
  if(Serial.available()) {          // Is serial data available?
    char outgoing = Serial.read();  // Read character, send to XBee
    Xbee.print(outgoing);
  }
  
  if(Xbee.available()) {            // Is data available from XBee?
    char incoming = Xbee.read();    // Read character,
    Serial.println(incoming);       //   send to Serial Monitor
  }

  delay(50);
}

((RxTx99))

//TxRx99 Code..........



#include <SoftwareSerial.h> 

#define Rx    6			    // DOUT to pin 6
#define Tx    7			    // DIN to pin 7
SoftwareSerial Xbee (Rx, Tx);

void setup() {
  Serial.begin(9600);               // Set to No line ending;
  Xbee.begin(9600);		    //   type a char, then hit enter
  delay(500);
}

void loop() {
  if(Serial.available()) {          // Is serial data available?
    char outgoing = Serial.read();  // Read character, send to XBee
    Xbee.print(outgoing);
  }
  
  if(Xbee.available()) {            // Is data available from XBee?
    char incoming = Xbee.read();    // Read character,
    Serial.println(incoming);       //   send to Serial Monitor
  }

  delay(50);
}

((Tx))

//Tx Code..........

int buttonPin = 10; 

void setup ()
{
  Serial.begin(9600);
  
  pinMode (buttonPin, INPUT);

}

int currState;
int prevState = HIGH;

void loop()
{
   currState = digitalRead(buttonPin);
   if(currState != prevState)
   {
      // A transition occurred...
      if(currState == HIGH)
         Serial.print('1');
      else
         Serial.print('0');
   }
   prevState = currState;
}

((Rx))

//Rx Code........


int LedPin = 13;
 
void setup ()
{
  Serial.begin(9600);
  pinMode (LedPin, OUTPUT);

}
void loop()
{
  
int Rx = Serial.read() - '0';
  
  if (Rx == 1)
 {
  Serial.println("Led is on");
 digitalWrite(LedPin,HIGH);
   
 }
 
 else if (Rx == 0)
 {
 Serial.println("Led is off");
  digitalWrite(LedPin,LOW);
  
 }
 
 else
 {
   Serial.println("Invalid!");
 }
}