CustardQuest I: The Real-Life, True Treasure-Hunt Game

I am Custard. I'm 11 years old and have created a treasure-hunt game. Read my paranormal-investigation notes and figure out the clues hidden within the text of the notes. These clues will lead you to a special stone hidden somewhere in the United States. If you find the stone, report it on the website (including the code engraved on the stone), and you will be paid reward money. It's free to play.