Who is Ganesha?

I recently visited London’s Royal Academy where I viewed a special exhibition called “Chola: Sacred Bronzes of Southern India”. Each afternoon, a member of staff gives a short talk on one of the exhibits and, on my visit, I heard an explanation of the statue of Ganesha.
He is one of the many Hindu representations of God and especially memorable for his elephant features. As the speaker explained, every detail of a statue of Ganesha is deeply symbolic, each part of his body and the content of each of his four hands meaning something important. You can find all the explanations here.