From Tom Lines: A large amount of excellent analysis...
Here are some examples:
-this paper by John Hilary, head of War on Want, for the Rosa Luxemburg Foundation's Brussels office: http://rosalux.gr/sites/default/files/publications/ttip_web.pdf
-Corporate Europe Observatory, whose very job is to monitor the big corporations' influence on the EU. It has been the pioneer this side of the Atlantic in explaining what the TTIP is all about. Find out more at http://corporateeurope.org/tags/ttip
-The Institute for Agriculture and Trade Policy in the US (IATP), which provides similarly thorough analysis in the areas of food and agriculture, arguably the biggest of the TTIP's battlegrounds. Find out more at http://www.iatp.org/issue/trade
-Glyn Moody, a journalist on Computer Weekly, whose regular "TTIP Updates" do an excellent job in situating the negotiations in the proper corporate context. Go to http://blogs.computerworlduk.com/open-enterprise/2013/11/ttip-updates-the-glyn-moody-blogs/index.htm for all 34 of them so far.