Question: What is the technique to hold a racquet so you can hit shots called?
About the article "Tennis", section "Grip".

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The "forehand" is struck from the dominant side of the body by swinging the racquet in the direction of where the player wants to place the shot.
It is called a forehand because the racquet is held in such a way that if one were to strike the ball without the racquet, it would hit the palm of your hand.
This is the opposite side from a "backhand".
It is considered the easiest shot to master, perhaps because it is the most natural stroke.
Beginners and advanced players often have better forehands than any other shots and use it as a weapon.
There are various grips for executing the forehand and their popularity has fluctuated over the years.
The most important ones are the "Continental", the "Eastern", and the "Western".
The key differences between grips are the different angles they create between the angle of your palm and the angle of your racquet face.
You are used to sensing the direction your palm is facing, so your palm makes the most intuitive basis for sensing the direction your racquet is facing.
For a number of years the small, apparently frail 1920s player Bill Johnston was considered by many to have had the best forehand of all time, a stroke that he hit shoulder-high using a "western" grip.
Few top players used the "western" grip after the 1920s, but in the latter part of the 20th century, as shot-making techniques and equipment changed radically, the "western" forehand made a strong comeback and is now used by many modern players.
No matter which grip is used, most forehands are generally executed with one hand holding the racquet, but there have been fine players with two-handed forehands.
In the 1940s and 50s the Ecuadorian/American player Pancho Segura used a two-handed forehand to devastating effect against larger, more powerful players, and many female and young players use the two-handed stroke today. 
A grip is a way of holding the racquet in order to hit shots during a match.
The grip affects the angle of the racquet face when it hits the ball and influences the pace, spin, and placement of the shot.
Players use various grips during play, including the Continental (The "Handshake Grip"), Eastern (Can be either semi-eastern or full eastern.
Usually used for backhands.
), and Western (semi-western or full western, usually for forehand grips) grips.
Most players change grips during a match depending on what shot they are hitting; for example, slice shots and serves call for a Continental grip.
In tennis, a grip is a way of holding the racquet in order to hit shots during a match.
The three most commonly used conventional grips are: the Continental (or "Chopper"), the Eastern and the Western.
Most players change grips during a match depending on what shot they are hitting. 
The Knuckle Racquet is a type of racquet that allows you to punch the ball giving you the feeling of boxing with the ball. 
In order to understand the grips, it is important to know that the handle of a racquet always consists of 8 sides, or in other words, has an octagonal shape.
A square shape would hurt the hand, while a round shape would not give enough friction to gain a firm grip.
The eight sides of the handle are called bevels.
We can number the bevels from 1 to 8 as follows: if the blade of the racquet is perpendicular to the ground, the bevel facing up is bevel #1.
Rotating the racquet counter-clockwise, the next bevel facing up is bevel #2, if you are right-handed, and clockwise if you are left-handed, and so on to identify all 8 bevels.