1. Don't use a walkthrough. It's more fun when the whole game isn't spoiled. Plus, there aren't even any walkthroughs for this game.

2. Try not to give up early on. Keep in mind that these levels ARE playtested and solvable. If you believe you're overthinking it, back up a bit and go over the clues again.

3. Some levels might require team effort. If you need to, ask a friend or go to the forum for help.
      Note: Don't just give out level links to people!

4. Not a rule, but a strongly recommended suggestion: Bookmark level pages, and save your answers. You never know when you're going to need to go back to a certain level for a clue.