You are able to leave posts and photos to your hearts content.
Login at bottom right, then select “Write -> Posts” set a title and add the story, then click “Publish” in the grey box on the right.
To add an image select the first icon next to “Add media:” above the story text, and follow the prompts.
If you would like people to comment on your post then scroll down and tick the “Allow Comments” box in the Comments & Pings advanced options.
Here’s hoping the team has things to tell!