There’s a lot of lore behind World of Warcraft. Part of that is because the game has had plenty of time to develop it, and part of it is just that licensed tie-in novels offer lots of space to expand the lore and provide another few thousand-year histories to track. But there exists a space between “I know all of the lore inside and out” and “I don’t care about your story, I’m killing this guy with fire magic because I can so I probably should,” and WoW Lore TLDR aims to make that slightly more straightforward with incredibly succinct lore summaries.
Each era of history gets a very brief summary which can be expanded into similarly brief bullet points, and those individual summaries can also be further expanded. It never becomes a comprehensive guide that will let you know all of the fine points, but if you just want to know what the hell characters are talking about, it’ll get you a quick refresher for veterans or a quick guide for new players. And it’s still better written than several of the tie-in novels, so that’s another mark in its favor.