youtube.com has some nice magic tricks. infact search 'This and That' magic trick in youtube and they even have videos that explain step by step instructions. You can also search for more tricks and illusions. good luck
ill tell you a magic:
you ask a person to select a card,and place it back into the deck.now his card will be face down on a face up deck.
secret: without his knowing turn the bottom card.now fan out the deck(without showing the bottom one) and ask him to take a card.when hes looking at his card turn the deck over.
now ask him to place his card inside the deck.now take both ur hands behind and turn the bottom card.now fan the deck to him,his card will be reversed.