SUNPAK POWER ZOOM 4000AF

Basically i bought a sunpak power zoom 4000af flash for my nikon d3100 camera. But I have NO clue how to work it! I've put the batteries on, turned it on, and thats it. I've NO clue what to do or even how to test the flash. I don't know how to set it up with my camera either.
Pretty desperate here! It never came with instructions, so please, Help!

Here is a manual for you go to this link and let the pdf open.

http://www.cameramanuals.org/flashes_meters/sunpak_4000_af.pdf

But the flash probably will not work because it was designed to be used with the old film cameras.sorry

Kese ho lala? When you put the batteries in the flash, turn the flash on. There will be a button(small circle) in the flash which will turn orange once the flash has recycled(gained charge from the batteries). Please make sure that your cells are fully charged. Now if you want to use it with camera, place the flash in the hotshoe of the camera, turn the flash and the camera on. Set ISO on camera to 100 and turn off auto iso. If your flash is auto, just click and adjust the settings accordingly