This, to me, seems like an excellent introduction to Foucault, especially for somebody who knows nothing about him except for that he can be described as a 'continental philosopher'. I'm currently a student in what might be called the analytic tradition and so, beyond overhearing a few things from friends in other humanities classes, I knew near-zilch about him and kind of harboured a pre-emptive suspicion about anything he might have to say.
The great thing about this VSI is that it offers a systematic, limpid cover of (I think) all his main areas. I have now gleaned a very basic understanding of his views on literature, what is meant by Foucaltian archaeology, genealogy, his views on punishment and sex, and his views on the development of the self, all thanks to this short and very accessible book.
I think for anybody who finds within them a frustration or exhaustion with searching for capital-T objective truth and has, over a little bit of studying, begun to empathise with relativistic accounts of knowledge, this introduction to Foucault and (especially) his methods of archaeology and genealogy is highly recommended. I now definitely want to read some of his books as this introduction has led me to believe that Foucault will be my homeboy.
It did very briefly mention, however, that Foucault is obscure and difficult to read, which is upsetting because the ideas in this introduction were presented so lucidly and accessibly. I will still give him a shot, though, even with some apprehension.