I would recommend smoking DMT for the first time. For one, there's significantly less possibility that you'll get nauseous, and nausea can really interfere with enjoying the experience. It also is much shorter when smoked so even in the event things do go wrong, it's only for a very limited time and then it's over. I would read as many trip reports as possible to familiarize yourself with possible things that may happen, but ultimately you gotta just "take the plunge" for yourself to find out how it will go because for everyone (even experienced users), we never really know how it's gonna go. It can be so radically different every time that it's kinda futile to try to expect much because DMT has a tendency of shattering your expectations over and over again (even when you're pretty experienced with it).
"Science without religion is lame. Religion without science is blind" - Albert Einstein
"The Mighty One appears, the horizon shines. Atum appears on the smell of his censing, the Sunshine- god has risen in the sky, the Mansion of the pyramidion is in joy and all its inmates are assembled, a voice calls out within the shrine, shouting reverberates around the Netherworld." - Egyptian Book of the Dead
"Man fears time, but time fears the Pyramids" - 9th century Arab proverb