Article 2 of the UCC can be found on-line, including the Official Comments, at http://www.law.cornell.edu/ucc/2/overview.html/ or at the NCCUSL home page, http://www.nccusl.org.
Article 2A of the UCC can be found online, including the Official Comments, at the NCCUSL home page, http://www.nccusl.org.
For more information on incoterms, see http://www.iccwbo.org/home/menu_incoterms.asp/. For more information on the International Chamber of Commerce, see http://www.iccwbo.org.