Hello Again Alex101,
The following is all just my personal opinions on the matters you raised above:
Yeah, it really is difficult to truly prepare for DMT. For sure, read, read, read and research. Go through this site and all the sub-fora in depth. Check the trip reports in particular. Also, I would recommend the books "DMT: The Spirit Molecule" by Strassman and PIHKAL & TIHKAL by the Shulgins.
You can get podcasts of classics by such Bard's as McKenna, Watts and more at
www.matrixmasters.com.
Also, I cannot recommend meditation enough. Not sure if it's good preparation for a first experience, but it helps me with pre-launch anxiety, sometimes during the trip and after trip integration issues.
Again, just speaking for myself, cultivating an active skillset as well as knowing when to use it of things like acceptance, deeply letting go and surrender. This helps me a lot in DMT hyperspace.
Edit/P.S.: Where are you currently with the panic attack issues? Does it only come with smoking weed. I would recommend making a lot of progress/headway on those issues before considering dosing with DMT.
Also, given that you have never tried a psychedelic before, you may want to try to "warmup" so to speak with something a bit less intense than DMT, such as mushrooms or mescaline. You should be able to find grow information as well as mescaline extraction info in the wiki.
"But even if nothing lasts and everything is lost, there is still the intrinsic value of the moment. The present moment, ultimately, is more than enough, a gift of grace and unfathomable value, which our friend and lover death paints in stark relief."-Rick Doblin, Ph.D. MAPS President, MAPS Bulletin Vol. XX, No. 1, pg. 2Hyperspace LOVES YOU