The following is a list of links to resources about yeast used for brewing beer and perhaps other things. I'll continually add to this list as I find more resources. If you know of others please post a comment here with a link. If you are interested to see what other resource pages I have created click on the "resource posts" label link at the bottom of this post.
White Labs : FAQs, reviews, yeast library, etc.
Beer Dorks: Tips about Reusing Yeast