In addition to the prompt reply from a Moderator -
It might be too obvious to say that you will need to install an Operating System on a microSD card and boot your RPi from it.
If you choose the Raspberry Pi Foundation recommended and supported Raspbian Operating System then you would have access to the gpiozero
Python library module. This includes built-in support for common hobbyist 'Little Blue Servos' - it is implemented by calling on the pigpio library already mentioned.
http://gpiozero.readthedocs.io/en/stabl ... html#servo