Here is some of the documentation I’m using to self-educate myself about the Arduino programming environment as well as introducing myself to the field of robotics:

• Getting Started with Arduino by Massimo Banzi (co-founder of Arduino)
• Preface – Getting Started with Grove sensors for Arduino by seeed studio
• Introduction to Grove
• Practical Arduino: Cool Projects for Open Source Hardware (Technology in Action)
• Build a robot arm with cardboard
• More as I remember to catalog them!