Level 1: If this level is too hard, give up and go away. And I'm not kidding. This is unacceptable. Usually I would think you would make it a few levels, but the fact you are failing on the FIRST LEVEL shows you have no common sense. Go away.
Level 2: What do you think the hand is pointing to? Look up.
Level 3: Hmmm... a selection of things to do, but one of them helps you get to the next level.
Level 4: Whats the source of how this page exists?
Level 5: A certain type of code with dots & dashes.... what can it be?
Level 6: Think of it. What is a single word that describes both The Trial and The Judgement? You can use Google if you want.
Level 7: Can you do anything to open the door somehow? Prehaps look at the name of the image?
Level 8: This room needs light.. how can you do it?
Level 9: Looks like some numbers. Cipher, prehaps?
Level 10: Try finding a certain color and find it's "name".
Level 11-20: I can't help you with all the levels, but if you were able to do levels 1-10, these should be not that hard.