Carefully unpack the microscope from the box. Then place it on a table with an even base.
Connect the USB cable of the microscope to your laptop.
Open the camera in the laptop and select the camera option on the top left (In my laptop there is a camera rotation option after I have connected the microscope successfully.)
Now, place a white sheet of paper under the microscope and adjust the focus of the microscope till you get a clear image of the white sheet of paper. (Sometimes there will be a problem with setting up the camera try replugging the microscope USB.)
Carefully place the slide under the microscope and change the focus of the microscope till you get the clear zoomed image of the slide.