I am thinking of purchasing a 6040-4-AXIS-ENGRAVER-USB-CNC-ROUTER-ENGRAVING-DRILLING-MILLING-MACHINE-Desktop from Ebay. I am a novice and know nothing about this machine. Is it "plug and play" or do I have to download more software and update drivers? If I would need to add more items to the machine, what would the final cost be? Thanks for the help.