Xenoblade Chronicles X is a game with incredible depth, not just in the solo campaign but also in the various ways you can connect and interact with others online. Shared quests, group battles, recruiting avatars of other players, trading items - it's all in there.
It can be confusing, and even after sinking dozens of hours into the game and having published a 'getting started' guide we're still stumbling across new intricacies. The latest 'Survival Guide' video from Nintendo, then, is perhaps the most useful yet; it provides a useful and quick summary of key online features and how they work.
It's definitely worth a watch even if you're already well into the game; it may still teach you something.