Teaches players almost nothing about their class, interface menus, customizing actions bars, basic BG objectives, dungeon threat, healing or tanking, kiting, self-healing and potions, what the different city services are (AH, vendors, daily quests, travel etc...takes you to a class trainer who now do NOTHING), crafting, Chromie new leveling system and its pros/cons, partying, lfg tool, chat, whispers, logs...
If I was a new player I'd have learned almost nothing from that thing, and I would find the writing very cringy. It really does not have a Warcraft feel at all, just generic fantasy MMO setting.