If you are building a collaborative online environment with Posterous, you will probably have some people who don't know how to join or edit the space. This guide will help them with the basics. For those who aren't members Posterous, they will use the directions in the photo below.
For members who have a Posterous, they will use this screen to sign in.
Once they are logged in they will see their personal dashboard where they can access all of their spaces.
They will be able to choose the space that they are wanting to edit and they will see the dashboard for the specific space.
Once in the dashboard for the specific space, they will be able to click the Pages & Links button to reach the editor.
Contributors can add their content and then save the page.