What should I put on my German flash cards in order to know everything I'll need to know about that word? For example, I know for nouns I need to make sure to learn the gender and plural forms, since those vary by word.
When I was learning Greek I had flash cards that also included the genitive form of nouns, and for verbs the different principal parts. Should I also include the genitive form on my noun flashcards, or is plural and the definite article for the gender sufficient? What about other parts of speech?