I'm very late to the party but I know the solution to a couple you've missed!
For 14: The word forms if you colour in the squares in Excel. (so from F3 to F7, etc.)
For 15: I also did it filling in squares, after coping the pattern (but only ONE time) you can turn it sideways and type in the letters :D
For 17: in the main menu click on "load custom" then go to lvl 0.