From my experience, it is better to learn astral projection slowly. Doing it quickly is like you are rushing to do it and you aren't really doing it.I read that anyone can enter your astral realm, so you and your friend may able to see eachother if you find each other's realm. So it means that if you are physically in different states, you can still see each other. In the astral plne, you will not be able to see people in your home or anywhere. I am not sure, because last time I did astral projection. I recommend reading articles and doing research.