I think what makes it more difficult to understand and learn about this like what an account and wallet is because every project has their own definition of what it is. In some cases the wallet is the app. And in other cases wallet is something inside the app, not the app itself. The problem is all projects try to explain how it works in abstract ways that simplify too much. Ideally there should be explanations for all experience levels, like beginner, intermediate, expert. When they explain in beginner terminology it makes it harder for intermediate users to understand because the intermediate doesn't know what a wallet is but knows what a master private key is and child key and how a HD wallet works so if those kind of universal terminology was used it would be easier to switch between wallet software. But now I know what an account is in Sparrow.