If you are confused by anything, please browse the ample documentation nesting under the HELP menu on every page. If you want to POST something you can do this directly from the HOME activity FEED page OR from your profile.
If you don't like an image post, please use the REPORT facility. When an image is reported multiple times, it will be hidden and placed under moderator review. If you don't like a user, or what they post, instead of having a fit please consider using the MUTE button on their profile.
If you have a special problem of any other kind, please post in the dedicated SUPPORT group, where more experienced users will be happy to assist. NB. support questions in the main feed will be summarily removed!