the easiest what you can do:

Do you have developers mode on?
if so, download FileZilla on your PC

Connect your phone to the Wifi (your PC has to be connected to the same network)
Then go to "SDK Connection" on your phone (it's an app that is available when you have enabled developers options)
Inside that app, go to WLAN to see what is the IP of your phone to be able to connect with FileZilla.
On your PC at FileZilla:
Enter these information:

host = "ip of your phone"
username = user
password = rootme
port = 22
(if password is not correct, go and change it from the SDK Connections app)

Then you can browse through the directories what CepiPerez told you