The truth about truth is that is very hard to pin down. So, just like so many other books on truth, it failed to bring the truth down to earth. It just kind of floats around from cloud to cloud. It could be concluded that truth has different applications in different situations. This is actually not so out there as it might appear. There are lots of areas, especially in philosophy, that are really talking about different concepts, or aspects of concepts, that use a single word, or cluster of words to communicate them.
I found the book to be slightly meandering. Granted that Blackburn might have meant the book to take on this movement. However, he does cover a lot of ground in a fairly short book. He looks at truth from lots of different positions. These include realist, pragmatist, relativist, idealist, coherentist, foundationalist, eliminatavist, phenomenalist, quietist, and finally minimalist.
It appears that he prefers the minimalist position. A minimalist holds that the truth of something is just what makes that something hold. Consider: my cat is asleep. It is the case that my cat is asleep if he is asleep, so the statement holds. If it is not the case that my cat is asleep, than the statement does not hold. There is nothing more to consider. Either my cat is asleep or not. There is no extra component to consider. While the minimalist position is certainly attractive, I am not to sure that this gives truth all that is implied in this concept. I still need evidence that my cat is asleep or not to assess whether that statement holds.
Of course these different postions on truth do not have to be mutually opposed to each other. There can be a certain blending, and Blackburn certainly points this out. This might bring the issue more into focus or make it even more blurry. The book certainly held my interest, but could have been better structured.
My reccomendation is that, while the book is accessable from a novice's point of view, it is not a very good general introduction to truth. Still there is good deal that makes it worthwhile to read.