The two most important people at your job are your boss and the person in the payroll department who cuts your cheque. 

The company's org chart describes the formal lines of communication which need to be followed and respected but what I'm talking about are the informal lines of communication, the relationships you build with people in other departments > The informal network is often the way things get done in an organisation. 

Reach out to everyone and find out what it is they do and how you may be able to help them.