Whats the best way to communicate with 3 servos?

Hello!
I just read the arduino only allows 2 servos on pin 9 and one on pin 10.
This would be a great problem as I need atleast 4 to run my arm.

What is the best solution?
A shield, or can I simply build something myself?

You don't need a shield, just the servo library.

and power. link

Okej, I got power which can be supplied as much as I need.
But the servo libary, what do you meen?
Theres only two examples of hwo to use servos, where none shows
multiple servos.
Also, I dont find any example on using libarys either.
Could you give a little demo code or something?