positions is a collection of three interviews with derrida, all of which offer a pretty good introduction to his line of thought. this book is a lot better starting point than say, 'of grammatology', its really a lot less intimidating. this is of course because derrida is speaking verbally, 'improvising', and there isnt as much seemingly paradoxical word play. from 'positions' you can get a pretty good idea about what differance, logocentrism, and grammatology are all about. ignore all the criticism of derrida as a reductionist/nihilist who wants to demolish philosophy, he is a brilliant, poetic, innovative man.