Serial Monitor Help

Projects General Guidance
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(deleted)

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This really has nothing to do with serial monitor help.
What you want is to send to your arduino cmds to to something so you do something like this.
I'll point it out but you need to write your own code you'll learn something good then.

if (Serial.available() > 0) {
                // read the incoming byte:
                actioncmd = Serial.read();

Then you use a case statement to do what you want.

switch (actioncmd) {
    case 1:
      //do something when actioncmd equals "B"
      break;
    case 2:
      //do something when actioncmd equals "C"
      break;
    default: 
      // if nothing else matches, do the default
      // default is optional
    break;
  }