If you use the internet on a regular basis to carry out many tasks, and you understand ettiquette and internet protocals, then you are already a digital citizen you just may not know it.
Digital citizenship is about being a safe and responsible user of the internet. The definition according to wiki,
"A digital citizen refers to a person utilizing/using information technology (IT) in order to engage in society, politics, and government participation." (en.wikipedia.org/wiki/Digital_citizen)
My Digital poster-
