It sounds like you're referring to a guide about where Google stores your "Favorites" — though Google doesn't have a direct product called "Google Favorites" anymore (that was retired years ago).
If you're looking for a more advanced location management feature, you may want to consider alternative options, such as Google My Maps or other third-party apps. However, if you're already invested in the Google ecosystem and want a simple way to save your favorite locations, Google's Favorites feature is a good choice. google favourites location
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