Judges are looking for some key things during an exam for kendo 1 kyu or 1 dan, and this video describes some of them.
Online resources for kendo promotional exams:
AUSKF kendo promotional exam study guide: http://bit.ly/1HEbXnL
BKA kendo grading requirement guidelines: http://bit.ly/1LKPYLB
“Attitudes to Ji-geiko” by Honda sensei: http://bit.ly/1LPcQKS
Dojo etiquette disclaimer: If your sensei tells you to do things a different way, please follow the instruction of your sensei.