You can easily add Internet-based control for your Arduino if it is close enough to your server to be connected via USB. This tutorial will give the basics you need to get it working. The gist of ...

Normally, when a project calls for addressable LEDs, we just throw a strip of WS2812s and an Arduino together, cobble together some code from the examples in the FastLED library, and call it a day.… ...

Of course, knowing the basics of Arduino is only half the battle; if you want to get to the fun stuff you'll have to learn how to code it as well.