I just received an old 3D printer from one of my school teachers. I have no idea whatsoever as to which brand it is, no instruction manual attached to it, or any other info about it.
How can I find some information about it?
Some links would be very useful. Remember when giving advice that I know nothing about 3D printers.
This is the printer:
As far as I can see on the pictures - the main board shall be capable to upload Marlin software and run smoothly.
If you connect power and PC/Mac over the USB connection, then using Pronterface you can validate mechanical movements of the printer.
As the rods looks a bit dusty - please clean them with a soft cloth and degreaser to avoid jamming.
If you have any issues you could flash a new version of the firmware - please use this answer, to the question, How to upload firmware to reprap printer?, as a guide to how to upload firmware to the printer.