Using these Mini NeoPixel PCBs is easy. First, you'll want to solder wires to the pads on the back of the PCBs. Once that's done, connect them to your project, like an Arduino. Since they're chainable, you can link multiple pixels together with just one pin or wire. When it comes to power, remember that each pixel can draw up to 60mA at full brightness. An Arduino can handle up to 500 pixels at 30 FPS, but don't push it further or it'll run out of RAM. You can space the pixels up to 6 feet apart using ribbon cable, but be careful if you go beyond that as you might face power and data issues. Also, because the driver is constant - current, you don't have to worry too much if your battery power changes a little. For programming, refer to our NeoPixel Uberguide. It has all the library and example code you need for different Arduino models. As for maintenance, keep the PCBs in a dry place and avoid bending or damaging the soldered wires. That way, your NeoPixels will work great for a long time.