Preparation work
Before you start working with Arduino you should install Arduino IDE, you may find it here . Arduino IDE a platform to program your Arduino board. But it's not finished. Most of our Arduino chips are China based, and for them you'll need additional drivers. By the way you may download it from here . When you finish all preparation work, you may start lessons. P.S.: if you find mistakes or if you want add additional material to given lesson, please feel free to write it in comments below.