So I looked for a link in the left bar... nothing.
Tried looking at the edit page for the user info of the community, nothing there either. Tried the site map, nothing there either.
Tried the community center, nothing there either.
Tried the FAQ, I see nothing about how do I manage my community account either (Come to think of it, it's probably under how do I pass on my community)
Anyway, the point is it's #$%%@ hard to find this link if you need it. The site map at the very least should have it, I think: