Choosing the proper disc to use in Disc Golf is just as important as choosing the proper club in regular golf. Just like in real golf, each disc is designed to be used in a particular circumstance. In most circumstances, you'll use one of three discs, a driver disc, a mid-range disc, or a putter disc. Each has a different shape and requires a slightly different throwing technique, but all are eight to nine inches in diameter and weigh between 150 and 180 grams.
Driver discs are used when throwing from the tee box. They are designed to be thrown the longest distance, however they are the least accurate. Driver discs have a sharp bevel on the outside of the disc where most of the weight of the disc is located. This enables the disc to fly farther than one where the weight is distributed evenly. Some disc manufacturers further divide their driver discs into two categories; distance driver discs and fairway driver discs.
Mid-range fairway discs are used when throwing from the fairway. They are used for approach shots to the basket. A mid-range disc is more accurate than a driver disc, but does not typically fly as far. The beveled edge on a mid-range disc is not as severe as a driver disc and the weight is more evenly distributed.
Putter discs are used for short distances when trying to reach the basket. These are the most accurate of the three types. They're similar to the kind of disc you'd play catch with in your backyard. The edges on a putter disc are lightly beveled and the weight is distributed evenly throughout the disc, making it fly slower and allowing for more control.
Since the driver disc is difficult to throw, most beginners will start with a mid-range fairway disc and graduate up to a driver disc with practice. The mid-range disc is a decent compromise between what a beginner is used to throwing and the driver disc, although it won't fly as far.
As the player gets within 50 to 75 yards of the basket, and more accuracy is required, a player should switch to the putter disc. This is used until the player reaches the basket. Ultimately, the decision on when to switch to a different disc is learned through practice, especially as a player becomes better and starts incorporating new techniques and the driver disc into their game.