Your account
Account settings (from your avatar, top right) gathers what belongs to you alone.

Profile and language
Section titled “Profile and language”Your name, and your language — French or English. It drives the interface and your emails.
Password
Section titled “Password”Change it here — current password required. An account born from Google has none: it keeps signing in with Google, which is normal.
Changing your email address
Section titled “Changing your email address”The address changes in the profile — and confirmation starts over: a link goes out to the new address, and until it is clicked, the gestures requiring a proven address are limited again. That is the price of an address that means something.
My access
Section titled “My access”The My access panel answers “what am I allowed to see, and why?”: your role, your sites (pinned or inherited), your groups, the templates open to you — the same reading as “What they see”, but about yourself.
Your notifications
Section titled “Your notifications”The Notifications tab carries your email preferences.