I shared DMT with my younger sister who had done nothing but smoked weed a few times.  She has since explored other psychedelics, and is glad in retrospect that DMT was first. 

No other substance can prepare one for smoked DMT, at least in introductory doses.  The nexus is a great source of information on the topic, but the actual experience will throw you regardless.

Heed the advice for keeping an open mind and do know there truly never is any going back.

Glad to have you here.