Rewatching this at the moment, so the time has come for me to recommend the anime awarded "Most Similar to an LSD Trip 1998-Present".
Funimation has the entire subbed series available free to watch on YouTube.
I'd also recommend looking into some analysis of the show during/after viewing, because you'll have little idea wtf you just watched. For the purposes of starting out, just think of it as "Dystopian Oculus Rift Future" and work from there.
Addendum: Fair warning. There's a creepy alien scene in episode 9.
Funimation has the entire subbed series available free to watch on YouTube.
I'd also recommend looking into some analysis of the show during/after viewing, because you'll have little idea wtf you just watched. For the purposes of starting out, just think of it as "Dystopian Oculus Rift Future" and work from there.
Addendum: Fair warning. There's a creepy alien scene in episode 9.