Sorry I couldn't make the subject the full title I intended it to be. Here's a tutorial on how to make it so that you go into the 4th dimension every time you go to sleep
Take a look at this page:
Start by meditating and visualizing each chakra above your head lighting up, meaning you'll need good visualization skills. Once you open up the gateway chakra that is above the head, start with the first one first, you'll be able to pick up frequencies that are far above human hearing, making telepathy way easier. Eventually, you should unlock all of the chakras above the head but do it one at a time. You can also do the activation in a mirror to help with the visualization (meaning that you will not have to be meditating) and once these chakras are activating, you'll begin to travel to the 4th dimension while you are sleeping, eventually you'll achieve 4th dimensional consciousness, meaning you can leave your 3d body anytime and go to 4d realms, thus making you one with the spirit body.
Good luck on your path to achieving spirit consciousness!