We've posted a copy of the IDF's preliminary response (pdf) to the Goldstone Report -- though I would suggest that you don't even bother reading it, honestly.
Much of the 52-page document outlines how the IDF investigates allegations of war crimes and other criminal activity. It's useful background -- but also not particularly relevant to the allegations in the Goldstone Report. The presence of a well-conceived judicial system does not guarantee justice. (Just ask O.J. Simpson.)
The second half of the report summarizes the progress of dozens of ongoing investigations, some initiated by the IDF, others by the Goldstone Report.





