Category Mosaic:
Accessible from the navigation bar, under the "Categories" menu, you will initially find a mosaic of categories listed in descending order of their publication date.
For the first twenty days after being published, categories display a "New" label in the upper left corner.
Viewing a Category:
Clicking on a thumbnail in the mosaic will take you to a category's page. This page is laid out as follows from top to bottom:
Clicking on a photo will display the page with that photo.