Minimal requirements

I want to buy an SES-V2-Base-Rotate with and LSS-ST1 standard servo. What else do I need to buy to make this work?

@hipple Welcome to the RobotShop Community.

https://www.robotshop.com/products/lynxmotion-lss-base-rotate-kit
https://www.robotshop.com/products/lynxmotion-smart-servo-lss-standard-st1

In addition to this, you’ll need some way to send either serial commands or RC commands, and a way to power it at 12V.
How do you want to control it? This will help us give you an idea of the corresponding products needed.

Can I control it with a windows PC?

Sure. If you don’t want to do any programming, you’ll need an adapter between the PC and the servo. The adapter we propose is a bit overkill since it has six connectors and a power supply which can handle much more than one servo, but it’s plug and play:

https://www.robotshop.com/products/lynxmotion-lss-adapter-board-usb-type-c
https://www.robotshop.com/products/power-supply-output-12vdc-6a-input-100-240vac-switch-molded-xt60
If you don’t already have a USB to type C data cable:
https://www.robotshop.com/products/usb-c-to-type-a-cable-1m

As for simple Windows-based control of the servo:
https://www.robotshop.com/products/lynxmotion-lss-configuration-software

You could save money by creating your own adapter and using a power supply which provides 12V and less current, but you’d need to be comfortable with electrical wiring.