The Oxford University Press 'A very short introduction to...' books are generally very good, and this is certainly no exception.
As with the others, it is not insulting to one's intelligence (An idiot's guide to...), doesn't assume that you can't understand anything more complicated than a cartoon (Introducing...), and still imparts a good basic knowledge of the man and his work.
There's no way that this book would be enough to understand everything, and certainly doesn't replace reading actual works, but it arms you with more than enough knowledge for everyday conversations.
The writing style is quite nice, and fairly easy to read, and a good degree of objectivity is shown throughout - in no way is this a homage to Freud.
Personally, I think that if you wish to gain a good understanding of basic worldly knowledge, this series of books is an excellent place to start, and your understanding of psychoanalysis, not just Freud, will be enhanced through this book.