You can set which folder appears in a new Finder window by going to Finder, Preferences and then looking in the General tab. You can choose any folder. So if you have a folder you need to access often, you can set it to always open with that folder when you use the Command+N shortcut in the Finder.
Related: New Finder Windows Open, Toggle Finder Toolbars, MacMost Now 169: Controlling the Finder with the Keyboard, Open Enclosing Folder, Dock Access To Application Windows.
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