15 keyboard shortcuts that will improve your productivity in Ubuntu

1. Alt+Ctrl+Arrow Up/Down/Left/Right: Allows you to move between work areas
2. Alt+Ctrl+Shift+Up/Down/Left/Right: Moves the active window to another workspace.
3. Alt+Shift+Up Arrow: Displays all open windows in all workspaces.
4. Alt+F7: Enables the option to move the active window using the arrow keys.
5. Alt+F8: Resize the active window using the arrow keys.
6. Ctrl+Alt+L: Locks the screen.

Within Nautilus

1. Shift+Ctrl+N: Create a new folder.
2. Alt+Enter: Displays the properties of the folder or file.
3. Ctrl+W– Close the active window of Nautilus.
4. Ctrl+T: Open a new tab.
5. Alt+Up: Move to folder.
6. Alt+Left/Right: Move Forward/Back.
7. Alt+Home: Move directly to the user's folder.
8. F9: Show/Hide Sidebar.
9. Ctrl+H: Show/hide hidden files and folders.

There are many more, we can even create shortcuts yourself, but these are the ones I most out bag.