[Teuthida]

I don't know... If I never read any DC and someone handed me Crisis on Infinite Earths I'd probably run off to Marvel with my tail between my legs. Your beloved JLU is probably the best intro to the universe. From there I think 52 might be a better route for handling a lot of characters. Identity Crisis along with all the miniseries that led up to Infinite Crisis would also be good. That's how I got into DC. Then again I never read the first Crisis. It scared me off.