If you want to keep a paperless office, you need to be able to scan documents. Previously, you needed a scanner to do this. But today you can use your iPhone to scan documents quickly and easily. With Continuity Camera you can scan directly into your Mac using your iPhone. You need to make sure you have both Wi-Fi and Bluetooth enabled with both devices and that they are using the same Apple ID and latest macOS and iOS.
Most Mac users know how to use Command+Tab to use the app switcher. But did you know you can also hide and quit apps with the app switcher? You can also use the cursor to select an app and even drag and drop documents onto apps. By using other keys, you can navigate to a specific window or even a recently-opened document.