If you need a bit of a push on a riddle, that's okay! Here are some hints for the first chapter (Levels 1-5).

Level 1: You may recall looking at the "source" from the tutorial. Let's try that here.

Level 2: Those two colors are probably the key to the solution! Put them together.

Level 3: What is hidden is extremely hard to see... unless you use the right tool on it. Find the pattern!

Level 4: Did you find the other pages? (We call this an egg hunt.)

Level 5: Scan it! A certain part of the first image is still useful.