Article 2 of the UCC, including the Official Comments, can be accessed at http://www.law.cornell.edu/ucc/2/overview.html, or through the site for the National Conference of Commissioners on Uniform State Laws at http://www.nccusl.org.
Numerous sites contain information on the E-SIGN bill, including http://www.mbc.com/ecommerce/ecom_overview.asp; information on the UETA can also be found at numerous sites, including http://www.uetaonline.com.
Article 2A, including the Official Comments, can be found at http://www.law.cornell.edu/ucc/2A/overview.html or at the NCCUSL Web site, http://www.nccusl.org.
This "something new" became the United Nations Convention on Contracts for the International Sale of Goods, the CISG. Information on the CISG and other UN conventions can be found through the home page of the United Nations at http://www.un.org/.