so are you asking to solve this..? first, 3678 ,, (38,68,78,88..)
the other is tricky,, i would save, before start.. goto outside kat's room (west tower 2nd floor.), turn south, goto cabinet on south wall, mouse over cabinet/wall, "Sound On",, press space bar, click, mover right or left, but still on cabinet, repeat for second click.. once you have 2 clicks, move to east tower 2nd floor (where you got KS book), repeat on each cabinet,, 2 clicks each for a total of 4.. page will appear in middle of room...