Free e-Newsletters to keep up to date with e-commerce developments and 'How to Guides' are on the following weblinks...
http://www.practicalecommerce.com/
http://www.enterprise-ireland.com/ebusiness/news-newsletter.asp - How to Guides and lots more..
BASIS also has a section on Trading Online
It covers some of the factors that have to be considered when trading online that do not arise in a traditional trading environment. Topics covered include concluding contracts online and the taxation implications of e-trading.