To create a post, navigate to “WP-admin > Posts > Add new”.
In addition to all standard stuffs like header options and widgetized areas management, Posts adding/editing interface has a box called “Post Options” (fig. 1):
Here you can:
- Hide featured image on a single post page (in other words, inside of an individual post).
- Set categories for related posts (fig. 2):
- Choose post preview width on a blog page: normal or wide (fig. 3):
- Configure post preview appearance for gallery and video post formats.
“About the Author” (fig. 4) information comes from Dashboard -> Users -> [open appropriate profile] (fig. 5).
For the author avatar you should be registered in the web-site (Dashboard -> Users -> Your profile) using the same email address, as at Gravatar.com.