windows 3.11 problem

this is the first time i’m using 386dx computer(very old fesyen) and i’m not familiar with windows 3.11.My problem is..

1) i’ve already setup the mouse driver but it still didn’t function.(the port for serial mouse already rusty…is that becauseof that the mouse did’n working?)

2)is it compactable for all printer using 386/486dx.

3)how can we check the memory and hard disk by using ms dos.

can anybody help me…..