Today we'll be using the Arduino IDE. This isn't a website, so there's no link.
If you want to try this at home, try out tinkercad.com
#include <Adafruit_NeoPixel.h>
Adafruit_NeoPixel pixels(13, 10, NEO_GRB + NEO_KHZ800);
void setup() {
pixels.begin();
pixels.setBrightness(0x000A);
}
void loop() {
}