Sathe's tuts can be found here now: http://digitalapprentice.net/Community/index.php?option=com_content&task=view&id=67&Itemid=154&mosmsg=Item+successfully+saved.
Inorganic Modeling Foundations: Grant Warwick http://digitalapprentice.net/Community/index.php?option=com_content&task=view&id=67&Itemid=154&mosmsg=Item+successfully+saved. Rars have been taken offline.