I am teaching my daughters (10 and 12) D&D and we had purchased the Starter Set with Lost Mine of Phandelver. I was preparing for the game when I ran across this intro adventure. It takes place "Before Phandelver" and brings out the mechanics of the game to explain what player-characters can do and how it's done.
My daughters really enjoyed this intro which prepared them for the first encounter in the Starter Set. The encounter in Before Phandelver touches on DM'ing the adventure, combat, and how the players can use their ability scores in play.
Well done and a good intro to D&D and the Starter Kit/Lost Mine of Phandelver campaign.