Here are some useful links to websites related to kendo.

• Kendo bogu buying guide.
• Kendo kata videos (Japanese) on Youtube:
• Tachi vs. tachi
  
• Ipponme
• Nihonme
• Sanbonme
• Yonhonme
• Gohonme
• Ropponme
• Nanahonme
• Tachi vs. kodachi
• Ipponme
• Nihonme
• Sanbonme
• Some notes on kendo kata
• Detailed notes on kendo kata as well as kihon bokuto waza.
  
• Kendo World Forums - online support group for kendo addicts.
• Wikipedia entry on kendo.