Top 10 Spring '19 Features to highlight.

1. Website: https://www.salesforce.com/campaign/releases/spring-19/overview/
2. Release Notes: https://releasenotes.docs.salesforce.com/en-us/spring19/release-notes/salesforce_release_notes.htm
3. Release In a Box!: https://admin.salesforce.com/releaseinabox
4. Spring '19 Demo Videos: https://www.youtube.com/watch?v=26tvsSHQPy4&list=PLjJeA2SstEtJWaAoFVosNEZc465OlUvFA
5. Spring '19 Release Trail: https://trailhead.salesforce.com/en/content/learn/modules/spring-19-release-highlights