Page of Coins (or jack or knave of coins or pentacles) is a card used in Latin-suited playing cards which include tarot decks. It is part of what tarot card readers call the "Minor Arcana". It is believed to provide hints about how to invest resources and turn ideas into reality.
Often used to represent a young person, in tarot the Jack of Coins can mean a changing of your line of work and/or taking on more responsibility. But primarily, this is the card for students.