Creating your first post can be daunting and, if you are unfamiliar with WordPress, confusing. The following instructions will not only help guide you through how to create a post, but also how to ensure that the different components in your post (text, photo, gallery, maps, etc.) are all compatible.
Go to the main Posts page to get started: https://unpackingthebookstore.susqu.edu/wp-admin/edit.php
Familiarize yourself with the WordPress visual editor: https://easywpguide.com/wordpress-manual/adding-your-site-content/classic-editor/adding-content-with-the-visual-editor/
Take a screenshot:
Tutorials Point: https://www.tutorialspoint.com/wordpress/
CreativeBloq: http://www.creativebloq.com/web-design/wordpress-tutorials-designers-1012990
WordPress support: https://en.support.wordpress.com/video-tutorials/