How to write a Fighting Fantasy adventure gamebook

A number of commentators on this blog (is that the right word? Commentator as in 'one who comments'?) have asked how I go about writing an adventure gamebook. A while ago I promised one poster (as in 'one who posts') that I would reply via a series of detailed posts. Well I've finally made good on that promise and you can read Part 1 of 'How to write an adventure gamebook' here.