Useful PDF document for beginners: http://www.kendo.org.uk/files/beginnersbooklet20092.pdf.
Wikipedia page on Kendo: http://en.wikipedia.org/wiki/Kendo.
All Japan Kendo Federation – http://www.kendo-fik.org/english-page/english-top-page.html
British Kendo Association – http://www.kendo.org.uk/
International Kendo Federation: http://www.kendo-fik.org/
European Kendo Federation: http://www.ekf-eu.com/
Kendo Equipment Guide by Fukuda Budogu: http://www6.big.or.jp/~budogu/manu/topm.htm
Kendo Blogs:
kendoinfo.net Kendo information from Geoff Salmon http://kendoinfo.net
Kenshi 247 – Osaka based Kendo Hub for articles, photography and publications: http://kenshi247.net/
Kendoinfo – UK-based 7th Dan articles and opinion: http://kendoinfo.net/
Kendo World International Kendo Magazine and Forum: http://www.kendo-world.com/wordpress/