What is buddhism?

Buddhism is not a religion with one God to worship and people on earth who represent this God and enforce the rules which are provided in a Holy Book.

Most Buddhists won't describe their religion as a faith or a belief system, because there's no belief in a personal God and no focus on the relationship between humanity and this God.

Buddhism is a spiritual tradition that focusses on personal spiritual development to enlightenment.
Enlightenement can be attained through practice and development of morality, meditation and wisdom.

Personal responsibility is the core of the tradition.
As everything is connected compassion and peace are of utter importance.