I had a difficult time picturing much of the book, since it is based on references to other media and not described directly to the reader.

That's a feature, not a bug, but I would recommend reading this one near a computer so that you can look up scenes. At a certain point, Eldon Tyrell's office from Blade Runner is mentioned--this image is impossible to understand unless you have seen it in the film or at least in a clip on YouTube.

Apart from that, it was a great little book. Digestible, too. I already read so much for school that I have a hard time picking up a huge book and slogging through it. This was a much better bite-size for me.