Have you watched DMT: The Spirit Molecule? It's on Netflix and I highly recommend it.

Having a healthy respect for DMT is a good sign. It sounds like you are ready for it. I'd recommend a calm, comfortable place to recline with some white, background noise like a fan or something. Music is good on lower doses, but on average doses I've found it can be distracting and on higher doses it doesn't matter cause you'll be beyond the sound waves.

I can't really pin point how DMT in particular was beneficial to me other than just having a truly unique experience. I didn't learn anything about myself or become a better person for it. It was quite incredible though.

DMT burns and you lose a lot of potency if you just sprinkle it on a bowl. If you want the most bang for your buck, make a "DMT Machine". It's easy and totally worth it. It's basically a homemade vape. Google is your friend here as there a lot of different ways to make one. It may seem like a pain in the ass but it's not and I can't recommend it enough. Protip: Use Chore Boy copper wool, not steel wool.

As far as dose goes, it depends on how deep you want to go. You could split that 100mg 4 ways and share a mild trip with your friends. I say mild, but in DMT terms this is still going to blow you away unless you've done high doses of other psychedelics. If you are looking to have a total out of body experience, split that 100mg in half.

You may have some trouble doing it right. If you are vaping it correctly, a 50mg dose will take you about 3 full breaths to clear. The first one is easy, hold it. Exhale and try not to get distracted cause it starts to come on fast. Immediately take the second hit. Exhale. You'll want to put the pipe down and sink into at this point. Don't. Go for that third hit and do it the best you can. It's worth it. Imagine taking three bong rips in a row and do that. You may want to have some one ready to take the pipe from you so you don't drop it.

See you on the other side!