To create a Post, go to:

1. Posts > Add New
2. Add a title
3. Add some content
4. Add categories and some tags

Corpus supports 6 custom post formats. These are: Standard, Gallery, Link, Quote, Video and Audio Post Format. You can simply choose the post format you need and follow the detailed instructions in the appeared metabox below the Tinymce editor.
Furthermore, you can set up the classic options (layout, sidebar, disable various post elements etc), just like in page options, under the ‘Post Options’ section.

In case you use Standard post format (the most common post format), just upload a featured image via the WordPress classic meta box (at the lower right corner).

Last but not least, you can use the Feature Section in your posts just like in pages. That means you can add the following elements above the post content: Title (custom), Image, Video, Slider or Map. Either in full-screen mode or with custom height.