I found a jpeg version somewhere but it's lost now. Not much to it
though, with the camera set to bulb, just hit the mode button once for
'long exposure' (twice for LE with beeps) & set the shutter speed there
in seconds, minutes, hours, or 'time' mode (click mode a couple more
times) to watch the elapsed time with a click at beginning and click at
end, or default mode to hold down the button for the entire exposure.
Note the light button which is awkward to hold down but necessary at night.