You Sign In in the top right of the page, then enter user name and password to sign in to Google or whatever method you use. Click on the pencil in the orange box to make a post. Enter a title and then text in the box. Click on the picture icon in the option bar if you wish to add an image. Then click Publish in the orange box in the top right of the screen.
Looking forward to seeing many interesting posts and discussions in 2014.