First, choose whichever category your article pertains to. Check which options you want by checking the boxes.
Clicking on 'save' submits the article. You will notice five stars on the lower right of articles. Click on how many stars you want to rate the article. There is a little icon on the right side next to the timestamp that slides out. You can choose an icon to edit or delete the article after it has been submitted.
On the login field, you can edit your profile to hide your email address, choose an avatar, etc.