Congratulations, you've managed to find the secret guide to using the Quantum Copier, a device that can duplicate anything in the multiverse. But don't get too excited, this thing is not for the faint of heart. Or the faint of brain. Or the faint of sanity.
First, make sure you're in a safe zone. The Quantum Copier has a tendency to attract unwanted attention from entities that don't take kindly to reality distortion.
Next, select your target. Be it a sandwich, a unicorn, or a poorly-made decision from your college days. Make sure it's something you want to duplicate, because once you've got it, you can't get rid of it.
Press the big red button, and hold on to your seat. The copier will do the rest, spitting out an infinite number of identical copies of your target. But don't say we didn't warn you.
Hyperlinks: Quantum Copier Maintenance, Quantum Copier Security Risks, Quantum Copier Side Effects