just to throw in on this, yeah dont buy DMT make it. also i tryed DMT having not yet tryed any other psychedelic and enjoyed it, no meditation background or anything like that just a VERY open mind. i do believe that you can prepare yourself for DMT by being well informed and very open, but not for a full dose breakthrough.
If you start in small doses and just feel it a few times and go slowly i think you will be fine, myself and 3 other friends have done it in this manor. we have also all done shrooms since and enjoyed it. one warning though, this isnt for recreation, and doing it in small doses will make you treat it like that, cause its fun and fast at first, but you MUST take it seriously cause when your ready for a real dose its a whole new level and you will never see it as recreation again.
also i think everyones advice is the best way to go, there is more to this then you can understand and the more prepared your mind is the better. but it is possible to dip your toes in, very carefully