pushbuttons+ switch and Leds code error

Using Arduino Project Guidance
#1

i’m a absolute beginner and trying to program a code… but i don’t know how to fix some errors please kindly help me…

switch_button.ino (1.97 KB)

#2

Why are you using Arduino IDE 1.0.5? What does the library #include <Button.h> do?

What is this?

buttonState = digitalRead(PBin1);
     if (buttonState == HIGH)  
     Serial.println(buttonState);
{     
    // turn LED on:    
    digitalWrite(PBout1, HIGH);  
  }

What is supposed to happen and what doesn’t happen?

#3