If this is your first time playing one of these, here's where to look for clues:
Level 1 - What does the URL say?
Level 2 - Each number corresponds with a letter...
Level 3 - What does the title say?
Level 4 - "Did you memorize the name of everybody in [Redacted for spoilers]?"
Level 5 - I really need to know how to play Sokoban...
Level 6 - Found the right thing? Don't think too hard, it's only 2 words...
Level 7 - Take a careful look at the comments, they have meaning...
Level 8 - Something hides beyond the border...
Level 9 - May need to graph them.
Level 10 - The - represents the circle in the middle. Try and draw the lines between...
Level 11-60 - "This is as far as I'm willing to take you, you're on your own now."
That's right, no more help beyond this point.
Keep in mind that every level is different from each other.
Remember, the very first time you cheat, the whole fun is snapped to dust.
Also, don't brag with your level progress. It won't make any sense.