After you made your selection (fret/string ranges, reveal/display times, (non)random, number of sets) it is easy to initiate the FlashCard Mode. Click on Start and the notes will pop up one after another like flashcards. If you get interrupted just click on Pause. The button color changes to indicate you are paused. Click on Pause again to continue. If you click on Start - you will start all over again. Click on Stop to exit the Flashcard Mode.