The DnD New Player Tutorial Adventure (5e)
I'm of the mind that the two most difficult things for players who are new to Dungeons & Dragons 5th Edition ("DnD 5E") are creating a character and learning the basic mechanics. This adventure addresses the latter. I like to run this tutorial for players who are brand new to DnD. The less familiarity your players have with DnD and role-playing games in general¸ the more valuable this tutorial can be.