Once you go through the portal, notice what you see on the other side. Don't attempt to explain it or reason, as logic is a false prophet. Just go through the experience and let yourself know what is going on.

Stay on the other side for all eternity. There is no time, and you can come back noticing that only a few minutes passed. Ignore all the so-called experts who say that "the brain synchronizes with time." There is no time in space, and there is no time in where you are now. The only time that exists is what you create in this world.

Remain for an eternity more as you explore every aspect of this unknown world. If it is an inner world, the world of your mind, then explore every aspect of it and see what you uncover. If what you are exploring is what many call the "astral plane," see what you can find in it. Whatever you do, know that this world defies explanation, and you will know that it does not need any explaination of any kind, or any proof whatsoever that it exists. What matters is what happens to you and your life whenever you explore this mysterious dimension, realm or whatever else you tend to call it. It needs no name, only you.

Another portal opens, this time, to another essence. Enter it. What do you see? Do you see the same thing you saw earlier, only different? Do you see another version of the world that you explored, or is it something totally different? Don't be afraid of being harmed. You cannot be harmed in the state that you are in. If anything happens to you, you can just simply will yourself back into the cluster of stars you started in.

After exploring the unknown territory, go into any portal that opens. Explore every crevice that is existing in the unknown realm. Ask yourself questions that you can only answer. You will then find out more of the Universe the more you explore.