There are some well known actual books like John Palmer's How to Brew (which, actually, happens to be freely available online).
What other books and guides are available for free online that teach homebrewing?
There are some well known actual books like John Palmer's How to Brew (which, actually, happens to be freely available online).
What other books and guides are available for free online that teach homebrewing?
There's Brau Kaiser's wiki and the Home Brewing Wiki, which are both large and detailed, though maybe not as easy to use as Palmer's book.
Brew Your Own (byo.com) has some great articles and resources, like hop charts, grain charts, etc.