If it's not a trade secret... can you maybe do a thread/post on your camera gear etc? I know there are a few budding photographers on this site, including myself who would love to know what you are using and what, if any, software you use.
I might start a section for this kinda info where people can exchange some tips on photographing their pride and joys.
I'm sure you'll read the more technical explanation of ISO, but essentially it's the sensitivity of the sensor/film your using. There is also an inverse relationship between sensitivity and sharpness of the picture. IE - the higher the sensitivity (ISO), the lower the sharpness (grain-film/noise-digital)