In this lecture I will present what is the purpose and benefits of GO for students and university itself. I will share my experiences with establishing the GO and information about the best practises from other countries in Europe. This lecture is for students who are interested in the sustainability of universities and also businesses, because most of the principles are the same. This lecture is also beneficial for teachers and university employees, who can be involved in the GO and for people, who want to benefit from having the GO at the university campus.  Lecturer: Jana Pulpanova jana@envirostyl.cz.