The account settings can be accessed from the Settings panel, which is at the far right of the main menu.
I will now go top-to-bottom and cover all the fields in the Account Settings.
If you press on the green Edit button you can edit your First and Last name:
If you press on the green Change Password button you will be able to change your current password.
Sales summary newsletter:
This field allows you to adjust the frequency of the sales summary newsletter
Pressing Edit will bring up a new pop-up window from where you will be able to select how often you want to get the newsletters.
From here you can see all of your available tags and remove them if necessary.
Pressing Add Tag brings up a pop-up allowing you to add additional tags.