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.
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.