I'm new but learning quick, Dumpsters, side of the road are good places to start, but people seem to be afraid of just throwing out electronics...especially computers. I've found the best places are peoples homes. My family has old computers from the 80's, I just went around asking them if they had old Computers, Printers, Scanners, Hard Drives, CD/DVD Roms, Floppy Disk Drives, and even Ink Cartridges. You would be surprised at the amount I came up with, Right now I'm researching each computer components to see if anyone wants them whole before I tare them down for scrap metal. Good Luck