Mac: If you use the same folders to save your documents, but your Mac or its apps just won't remember the folder you last used, here's a shortcut that can help you get there quickly.First, navigate to your favourite folder in the Finder, or leave it up in the background. Click to highlight the folder, and press Cmd+C to copy it. Then to back into the application you're using, and when you're ready to save your document, press Cmd+S to save and then press Cmd+V. A "Go To Folder" window will appear, already populated with the folder you just copied. Click "Go", and you'll be dropped into your favourite folder, without being forced to click through a dozen nested folders to get there.
This shortcut also works if you drag your destination folder into the save as dialog; the app will take you directly to the folder so you can save your document inside of it. If you want to replace a specific file with the one you're using, repeat the process here, just instead of copying the folder, copy the file you want to replace. Those who prefer the mouse can get the same result by dragging their preferred folder or file to overwrite on top of the save menu.
Shortcut of the Day highlights a great shortcut on various platforms from the desktop to mobile devices to the web. You can find more shortcuts here.