This tip will allow you to reach into folders up to four levels deep without having to open windows along the way. Traverse the multi-level menus that appear to reach the item you want, and click to choose it. For each often-used application, locate and select the application, choose Make Alias from the File menu, and drag the alias to the 1Main Apps folder. Similarly populate the 1Main Folders folder with the aliases of often-used folders. Once this is done, you can use the Apple Menu to access items in two folders.
Most mice have a ball that rolls along the desk surface.
Turn the mouse right side up, catching the the ring and ball in your hand. Turn the mouse over and carefully use your fingernail to scrape deposits from position-adjusting wheels inside the ball cavity. Replace the ball and retaining ring.