Ancient Times in the Hawaiian Islands - History of Hawaii - short, but good, recognizing our lack of written knowledge and unbiased experience in understanding pre-contact Hawai'i.
Blades of War - informative article that covers weapons and warfare in traditional Hawai'ian culture.
Hawaii History: Pre-Contact - a good sum-uppance.
Hawaii's Living History - Makahiki Season - a season of rest, competition, and easing of kapu following the harvest in traditional (pre-contact) Hawaiian culture. This article is a good introduction.
Hawaii's Living History - Voyaging into New Horizons - not really specific to Hawai'i, but good basic information about Polynesian navigation in this article.
Old Hawaii - short look at Hawai'ian culture before Cook.