Great free download (sourced through twitter) from 'The Print Handbook' (still waiting for mine in the post...). For a small fee of a tweet, you can download PDF files with instructions how to make binds for books, pamphlets, zines etc. Really clever idea- and great way to promote their site. I'll definately be using this to experiment with binding styles in my 'Design Production for Print' project, and will make some mock ups asap. Keep an eye on my Design Practice blog for the finished outcomes.