The learning theory says that the retention rate is higher the more senses you use simultaneously in learning. If one pronounces the question and answer of the card index aloud during learning (i.e. by seeing, talking, hearing three senses are already used), the retention rate increases significantly.
When you start practicing vocables, first create about 20 cards on MemoCard and start practicing. If you then know the vocabulary of these cards, you will create 20 more cards.
On MemoCard you can also capture all words of a vocabulary, and simply pause those you don't want to learn yet. Once you want to learn the paused words, you can activate them. See also {link}
Pause or activate flashcards.