Any Other Color Door- A crappy beginners guide to red door yellow door

I have researched these topics and I have a fairly large amount collected knowledge from real-life experience with this game. Please do not play the game before reading through, every detail is important. It is a creepypasta type thing, but from what I have experienced it IS QUITE REAL. I have an extended list of things to look out for, and I will separate this guide into chapters so you can find everything at ease. The last thing I would wish to be responsible for is a bunch of kids and teens losing the ability to move on.