Dashboard
The Dashboard is not terribly exciting but does give you quick access from the left hand panel to your blog Posts, Media uploads (photos, images, documents etc) and any Pages you can edit. It also has a link back to your website, just click on the websites title in the top admin bar.
If this is your first time logging in you might also want to edit your personal details or change your password which can be found in the Profile link in the left panel.
To change your password scroll to Account Management near the bottom of the page and click Set New Password
Accept the generated password or more likely type in your own. Click Update Profile to save.
> NEXT: Editing a Page