>>24587Eden: It's an Endless World!, Hi no Tori, Dorohedoro, Humunculus, Oyasumi Punpun, Takemitsu Zamurai, Battle Angel Alita, Blame!, Devilman, and Uzumaki.
The one I recommend for you to watch first is either Oyasumi Punpun or Battle Angel Alita.
Punpun is a Coming of Age story with some of the most realistic depictions of people in a manga ever written.
Battle Angel Alita is up there with Evangelion and GitS as contender for all time greatest works of sci-fi in manga form.