If you wish to remove an update/comment/question/photo, locate the post you wish to remove. Click the small circle button with the white 'V' to the right of the post you would like to remove. Select 'delete this post.' A window will appear asking you 'Are you sure you want to delete this post?' Click OK. Your update will be deleted.
To edit something you have posted, click on the small circle button with the white 'V' to the right of the post you would like to edit. Make the changes you need in the box that appears below.