This is not really a Christian resource at all but I know a few of my readers have their own blogs and websites and thought the post ’31 great free e-books’ would be worth mentioning.
There is a great selection of eBooks from good usability, creating flagship content, SEO and much more. Even if you don’t want to monetize your website there are some powerful learnings to be made here that could push your website onto the next the level. That can only be good news for your readers! I’ll try to read them all for you guys ;)