There's a whole bunch of strings to choose from, but your path can be made more simple depending on what kind of player you are. The natural gut string is preferred by professionals because of it's elasticity and general responsiveness. But natural gut string can be much more expensive than the synthetic varieties. If you're a beginner, go with a synthetic string with a larger gauge.
String Type
Nylon racquet string is the most affordable, while also being a good alternative to natural gut string. Nylon tennis string is also good for gaining control over the ball, which is important when you're learning how to place your strokes. Polyester strings are best for those tennis players that add too much power for their own good and actually need a stronger string because they'll break other materials more quickly. Multifilament string comes close to natural gut string in that it eases the amount of power you need to use for a great stroke, while still punishing your opponent. The only problem: these strings tend to fray and go bad more quickly. Finally, textured string is exactly as it sounds. It has a raised wrapping so that you can have more intensity in terms of the spin you place on the tennis ball, since your strings will be gripping the ball in the direction that you hit.
