Projects under Arduino

I want to ask the question I want to learn the kicad software to make my own ardino hardware. Kicad is the open source software to make the electronics circuits designs. One can learn more about it from the lnik as KiCad - Wikipedia. SO how I can start this. There are many libraries of footprints which we are not included in the kicad library. SO I have to include it by myself. I prefer to work with kicad open source. I am working with open source community. So I have to start.

Any help from anyone.

I would suggest you consider EAGLE
many more parts available
much more support (certainly on the forum)
and you can download it free!