Hi Stevan,
Welcome to the Nexus. Nothing wrong with being a newbie. This is a very exciting time actually. You have the potential to begin one of the most amazing adventures possible within this human lifetime.
It all starts with extracting your own medicine from plants. It sounds daunting at first but trust me if I can do it, most folks can. It's about as difficult as cooking a dinner from scratch while following directions. There is a Wiki link at the top of the page here. That leads to Extraction Paths.
If DMT is your main interest, I would recommend starting with something simple and easy like one of the straight to base (STB) teks there. Check things out, pick one, study up, procure supplies, ingredients and safety equipment and you will be on your way.
And the DMT you extract carefully at home is going to be beautiful and very pure. Best place to get DMT is from your home,

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So how did you like the 3 grams mushroom experience? In some ways, (in particular the immersive trance/visionary state) high dose shrooms can be a bit similar to DMT.
If you are a curious man; if you view yourself as an explorer; if you are willing to see a different world that is quite literally 30 seconds away from this one. . . . then you have come to the right place.
I'm so glad you signed up.