Shuffling: This takes practice & patience. There are several ways to shuffle. You can find many video tutorials on youtube
Swish & Mix: The easiest. Lay all cards face down on table, swish around with both hands to mix them up. Then gather again.
Overhand Mix: Hold cards loosely in hand resting a long edge of the cards in the palm of the other hand. Carefully take a portion of the back of the deck and bring it to the front. Repeat several times.
Dealing Cards: Hold the deck, face down, loosely in non-dominant hand with thumb on top. Push or slide the top card away from the palm toward the open side of your hand. Take it with other hand, thumb on top and place it straight down on table. No wrist movements or turning card up. Deal cards clockwise to each player.
Dealing Cards Face-up or flipping: (as in playing War) Hold deck in non-dominant hand. Place fingertips of other hand on top of deck, slide top card TOWARD self so you can see value then end the flip by placing it on table.