My company just bought another company. In their server room they had some older hardware, which I would like to repurpose. One of these is a Cisco Switch: C3560G-48TS-S.

I found some instructions about this switch here but this is not a guide for a beginner. I have no idea how to connect to this thing to begin running the commands.

It says

Configure the PC terminal emulation software for 9600 baud, 8 data bits, no parity, 1 stop bit, and no flow control.

But I can't find anything on how to do this (assuming with telnet?) or even what program to use. I also don't know how to find the IP address of the device to connect to it.

My research also says once I get in there, I need to run

clear config all

Is this the right command? Also, what if I can't get the username and password for these devices? Is there some way to factory reset (my only experience is with devices that have a hardware reset button)

EDIT:

I should note that when I push the button on the front the three lights blink, which according to the documentation indicated the switch is configured and "not available for express setup"