I learned this card trick from my uncle. It's really simple but will still amaze the person you are showing it to, however if the person asks you to show the trick to them again DON'T!!!!! The reason for this is that they may find out what the trick is.
Step 1: Shuffle the Deck
I know that this is sounds really simple but it is the most crucial part of the trick.
While shuffling you must take a look at the bottom card and memorize it (both number and suit). This will be very important later in the trick.
Step 2: Pick a Card
Now you fan the cards and ask the person to pick a card, look at it, and put it at the bottom of the deck.
Step 3: Shuffle the Deck, Again
This is also very important you must cut the cards up to 4 times (simple but important).
Step 4: Is This Your Card?
Now take the deck and start flipping cards over. Do you remember the card that you memorized earlier? When you see this card then you flip over one more card, pick it up and ask is this your card?