You can easily show post type instructions in your WordPress site. instructions can be shown above content and other metaboxes on post edit screen.
Add Post Type Instructions is the new WordPress plugin that enables you to set instructional text for posts, pages and other custom post types.
You can show it below the post title box, excerpt metabox, trackbacks metabox, featured image metabox, custom fields metabox, author metxbox and post format metabox etc.
Start by installing and activating Add Post Type Instructions plugin in WordPress.
Upon activation visit your admin area dashboard Settings -> Post Type Instructions page and type in or paste the content to display below the title field.
You can use plain text or HTML and enter special instructions for the post type.