Your profile is manged from the Profile page under the Profile menu which you can find on the upper right-side.

In the Profile page, you can edit your name, email, and personal phone. You can also upload an avatar by clicking on the circle on the left.

Update Password

You can update your password by clicking on the Change Password button.  You will be prompted to enter your old password, and enter a new password then repeat it in order to confirm it.