Numpad Hero

  Level 0 - Welcome
  Level 1
  Level 2
  Level 3
  Level 4
  Level 5
  Level 6
  Level 7
  Level 8
  Level 9
  Game Over - Certification

Level 2 - Low Row Row Your Boat

Put your index finger on the 1, your middle finger on the 2, your ring finger on the 3 and your little finger on 'Enter'. You will probably notice that your thumb still automatically lands on the 0. This is a good thing. 

When completing the workbook, Enter will be denoted by 'E'.