1. The Visual Basic Editor helps avoid errors in VBA coding by highlighting syntax errors in red and displaying message boxes. It looks for missing elements like quotation marks and parentheses that are considered "list separators". 2. Using Application.ScreenUpdating = False and Application.ScreenUpdating = True allows macros to run without showing each step on screen. This prevents screen flickering during long processes. 3. Within long macros, refreshing the screen with Application.ScreenUpdating = True and then interrupting with Application.ScreenUpdating = False allows pausing refreshment at significant points before ending with a final Application.ScreenUpdating = True.