PROFESSOR SINGH GIVES YOU THE INFORMATION YOU NEED TO PASS THE CLASS, HE MAKES LECTURES FUNNY EVEN WHEN THE CONTENT WAS RIDICULOUSLY BORING, IF YOU ACTUALLY GO TO CLASS AND PAY ATTENTION LIKE YOUR SUPPOSED TO IN COLLEGE YOU WILL PASS PIECE OF CAKE, HE GIVES YOU WHAT YOU NEED TO BE SUCCESSFUL. LECTURES ARE CRUCIAL TO THE TEST HES AWESOME :)