Sticky Header or Nav
Carrie Dills' tutorial: http://www.carriedils.com/widget-area-above-header-genesis/ - I've created a Gist for this
https://wordpress.org/plugins/peanut-butter-bar-smooth-version/
The plugin allows you to attach sticky bars to the roof of your site that stays visible no matter how far a user scrolls.
Sticky message that users scroll into - http://demo.studiopress.com/modern-studio/
Code Tutorial - http://cre8tivediva.com/add-banner-area-header-footer-genesis/ - I've created a Gist for this
https://wordpress.org/plugins/wpfront-notification-bar/