The video tutorial on this page gives a headstart: http://libguides.shu.ac.uk/content.php?pid=202903&sid=1759017 Download link for the IEEE style: http://mikemurko.com/general/ieee-referencing-for-word-2007-2010/
I found a tool called Scanner, very effective in determining which files occupy the most space etc. A review is here http://www.makeuseof.com/tag/visualize-disk-usage-windows-scanner/ The download link is towards the end of the review article.