I have tried to change the system password through the http://www.cisco.com/en/US/products/hw/switches/ps5206/products_configuration_guide_chapter09186a00801a64e4.html#1021182I go through the whole procedure but it then states I have no authorization...

I have a cisco 2975 switch and I am new to cisco. I have a console port and would like to to know how do I connect to this switch through the console I don't know the IP so I don't know how to get it. I would like help on how to configure this swtch