My apartment building has a computer room of 6 desktops and a Laptop. Since these are free to use I wondered if I could mine some small altcoins at night for some spare btc. But I am new to mining(the specifics), I don't know the brand of the computers or their specs but they are around 3 years old. Ive been watching and trading bitcoin for almost a year now so why not utilize idle computing power? Any and all advice is greatly appreciated.
To mine altcoins, you need powerful graphics cards. The laptop won't be useful, and we don't know about the desktops.
Get the specs, or we can't help.
Download MSI afterburner, it will at least tell you what series the graphics cards are.