Self-preparation of flesh cards or small cartons with appropriate words that help us memorize what we try to learn is a popular method of assimilating foreign words or grammatical rules. Colorful flash cards, sometimes supplied in a set with special compartments, can be also bought in a bookstore. They will be particularly useful for people who have good eyesight or learn several languages at once. Sticking notes in prominent places, e.g. above a desk, will help in the assimilation of information.