Annoyed that every time you use the Search in Finder, you search your entire Mac and not the current folder? Fix it by going to Finder > Settings > Advanced and selecting "Search the current folder" under "when performing a search"
How to Search the current folder as the default
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Navigate quickly with the keyboard in Finder
You can use Command and ↑ or ↓ to navigate in and out of folders.
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6 Mac Finder Features and Shortcuts
Useful Finder tips including bulk renaming, keyboard navigation, search settings, and background removal