welcome jblz86,
the nexus will surely provide you with all the information you can dream of concerning dmt, save the actual experience itself. We have members from pretty much all extremes here concerning the spirituality/science scale, so you'll fit right in...
concerning reality and our conscious mind, there have been endless debates about this. psychologically speaking YOUR reality is made up of YOUR conscious mind. physical reality however as far as quantum physics goes doesn't really have anything to say about consciousness. This is something that is misconstrued by people that want to interpret in this spiritual fashion. It may or may not be true in the end, but as far as I understand the message of such experiments as the double slit, there is no mentioning of consciousness, neither implied nor explicit. All it states is that interaction changes the state of the system. Since every observation needs some kind of interaction with the system it is impossible to observe a system without changing it. That's all. Now consciousness could still play some role in this whole gigantic process we call the universe, and personally I do suspect it does, but so far physics has not been able to make any statement concerning this. My suspicion is that this is like the goedelian incompleteness theorem: no way to prove it either way.