How to shuffle

In a poker game, true card handlers' illegal movements are invisible to any but the trained eye, and you need to have been a part of this craft before you can identify it.

Many kitchen table gamblers sometimes choose to falsify a deck of cards because of the glorified image of a "mechanic". They can deceive anyone who isn't looking and that makes them feel like a master trickster.

Mastering the art of card handling is like a full-time job that has a training period of decades, though. That devotion is not something that appeals to everyone. Most cheaters depend upon some very, very basic moves that are easy to spot.

Shuffling cards is actually very easy. All it takes is knowing how to perform the correct technique and then a bit of practice. Once you practice often enough you should be able to shuffle cards with ease.

Here are some examples of shuffling:

The Overhand Shuffle

The standard overhand shuffle is a very good and simple way to shuffle cards. It is a very open, casual, even sloppy shuffle, in contrast to the more elegant riffle shuffle and table shuffle. However the overhand shuffle is the shuffling technique most employed by beginners so this is where we'll start.
You have to hold the deck by the sides so that the deck is on its edge. The fingers of the right hand rest lightly against the back of the deck, thumb on top. The left hand grips the deck and lifts off as the thumb holds a few cards back. The thumb moves out of the ways as the left hand comes back down. Then you have to use the thumb to take a few more cards. This action should be repeated several times until you square the deck up.
These moves are the moves of a left-handed person. If you are right-handed, you should perform them backwards. The way to cheat involves a "transfer". In this case, the cheater will be putting the top card on the bottom of the deck, or vice versa, or both. With the first motion, they will pull away only the top card, and make sure that the rest of the cards fall on top of that card, putting the top card on the bottom. With the last few pulls, they will make sure to minimize the cards in a manner so that only the bottom card of the deck remains in the original hand. Then they'll simply throw that card(previously the bottom card) on top of the deck (now the top card).
The important thing with this shuffle is to have a light touch. If you find the thumb is taking too many cards in big groups or it is only taking single cards then don't worry about this, with further practice you will get the balance right. Instead of using the thumb to pull the cards off, you can just use the other hand to throw the cards down. Some people find this easier to do and a more natural action.

The Strip Shuffle (or Running Cuts)

This is a very nice casino type action and an ideal shuffle to combine with the riffle table shuffle. It can be quite tricky to get used to the handling, but definitely worth the effort.
Place the deck on the table and place the thumbs of each hand on the back edge, fingers at the front.
The right thumb grips a small packet from the top of the deck whilst the left hand removes the rest of the packet by moving out and forward.
The left hand brings the packet back on top of the smaller packet and the right index finger lifts up out of the way. The packets are not aligned together. The left hand packet should be jogged slightly to the left whilst keeping a grip on these cards. The right index finger then clips another small packet which fall on top of the previous packet as the left hand moves away again. The left hand packet comes back on top again as before and the right index finger clips more cards from the top.
The cards move away again and the small packet drops onto the cards below. This sequence continues. Until all the cards have been stripped and the deck is squared. Start by doing this shuffle very slowly. You can then speed it up once you've got the hang of it. You will often find that cards pop out of the deck when they shouldn't. Don't worry about this. Just square the cards up quickly and carry on. The key to this shuffle is the clipping of the cards by the index finger.

The Hindu Shuffle

The shuffle is very simple and quite easy to perform. Hold the deck by the end with the thumb and middle finger. The index finger can rest lightly on top for more support.
Here is an image from below. The right hand comes underneath the deck. The thumb, middle and ring finger touch the side of the deck. The index finger stays out in front. The right hand lightly takes packets of cards from the top of the deck. The removed cards fall onto the palm of the right hand. The index finger stops the cards from flying forward. The right hand goes beneath the deck once more and removes another packet.
This action is repeated several times until there are only a few cards left. These are placed on top of the deck, which is then squared.

The two most common shuffling methods are:

Riffle Shuffle or Faro Shuffle
Spreading the cards

Riffle Shuffle or Faro Shuffle:

Separate the deck in two even stacks
Holding each stack with one hand bring them beside eachoher so that they make a 20 degrees angle. The area between the two positioned stacks will look like a "V"
Now place your thumbs on the inner corner of the two stacks, closer to your body. To get it right the two inner corners should be slightly touching each other.
Next place the other 4 fingers on top of each deck. You know you got it right when you form an outward line with your fingers, starting from the thumbs and toward the other corner of the deck.
With the thumbs lift the corners of each stack of cards and at the same time hold the rest of the cards down with the other four fingers of each hand. You only need to lift the corner of each stack with your thumbs.
Now, using your thumbs, pull the inner corners of the decks up and with the rest of your fingers push the rest of the deck down.
Your thumbs should slowly and alternately move from their position, releasing one card at a time.
The corners of the stacks should be close so that the released cards overlap. With time you will learn how to mix the cards so that one card form one stack is below the correspondent card from the other stack.
Finish mixing the stacks in the above mentioned manner
To form a single deck push the shuffled cards in a uniform pile.

Spreading the cards - Spreading the cards simply means to spread the cards on the table, mix them and put them back together in a deck.

If you want to learn how to shuffle cards correctly, all you need is practice. If you want to involve cheating in your shuffle, you must be really good at it so that the other players don't discover what you are doing.