Physical books and e-books. They still provide a nice in-depth addition to the net. Actually I have downloaded about twenty of them from kindle. And it really looks I've started to read them. Earlier I have skimmed a bit here and there, now reading The Cicerone® Certification Program's Introduction to Beer, by Ray Daniels & al, from page one. This book really provides the basics of the whole beer process. Anyone wanting to share a beer book you read?