Hints are in black under each level
Level 1
whos in the image?
Level 2
error page
Level 3
certain numerals
Level 4
KATE
Level 5
different web pages, one of them is scratch
Level 6
Win95
Level 7
what came before oreos?
Level 8
numbers to letters for the second part
Level 9
computer logic gate
Level 10
chemicals! biology class!