Program to run two motors with Motor driver
check this one

void loop()
{
  // turn on motor A
  digitalWrite(In1, HIGH);
  digitalWrite(In2, LOW);
  // set speed to 150 out 255
  analogWrite(EnA, 150);
  // turn on motor B
  digitalWrite(In3, HIGH);
  digitalWrite(In4, LOW);
  // set speed to 150 out 255
  analogWrite(EnB, 150);
  delay(2000);
   digitalWrite(In1, LOW);
  digitalWrite(In2, HIGH);
   digitalWrite(In3,LOW);
  digitalWrite(In4, HIGH);
  // now turn off motors
  delay(5000);
  digitalWrite(In1, LOW);
  digitalWrite(In2, LOW);  
  digitalWrite(In3, LOW);
  digitalWrite(In4, LOW);
  delay(2000);
}