If you want to play the Pokémon Trading Card Game in the traditional manner, you simply have to go to the store and pick up a pack of cards. The same goes for the trading itself. If you want to trade with a fellow player, you just show each other what you have and take the card(s) by hand. However, in Pokémon: The Trading Card Game Online (PTCGO), the cards are virtual. You will need different methods to acquire those cards. The same goes for trading.