Thank you Red Tractors and Mike.
Yes, I know it is limited. Having said that, I'm quite lucky, because I got it with two lenses - 50mm and 75mm - and two negative carriers, 35mm and 6x6. The person I bought it from also included original box and a set of special effect filters. The larger lens is Nikkor, so I assume it is quite decent.
Yes, I was wondering about adjusting the light etc.