by Steve Puddick on WordPress.org
Add 'how to' instructional videos, slide shows, and more directly in individual WordPress admin pages.

The Global Help Tab is separate from the Help Tab post type. This special help tab appears on every admin page.
Admin Notes WP allows you to embed instructional ‘how to’ videos and other embeddable media from major platforms directly in the WordPress admin help tabs. Useful, instructional videos can be included on the relevant admin pages to help website admin users learn how your plugins and theme work.
For more quick videos on the features of Admin Notes WP visit the Web Rockstar YouTube channel
Other features include:
Components that are not relevant for your unique needs can be easily deactivated, removing them from the admin menus.
The following are some additional third party plugins and useful techniques which can nicely enhance the functionality
of Admin Notes WP.
Post Expirator
The Post Expirator can allow you to set Help Tab and Notice
posts to expire (not display) after a certain time or date.
Post Dating Posts
Setting the Help Tab or Notice post published date in the future will cause that post to only start appearing once that
date and time has been reached.
User Role Editor
The User Role Editor plugin allows you to manage the user capabilities
associated with Admin Notes WP. Refer to the Frequently Asked Questions section for the full list.