I've asked a question here: What is a string skipping exercise?.
A follow up question: Are there some good free exercise books available on-line for the post-beginner stage? A link to a good non-free one would be very much appreciated too.
This doesn't directly answer your question (sorry about that!) but personally, I don't use exercise books much these days. There are so many useful videos on YouTube for various techniques that it tends to be my first stop. It's personal preference of course but, for me anyway, watching someone play something is better than trying to pick it up from a book.
A couple of example links:
As corny as it sounds, your local library will have books that you can take out, photocopy or plain steal (just kidding!!!)
Here is an example link, but look in your own region: http://catalog.nypl.org/iii/encore/search/C%7CSguitar+tab%7COrightresult%7CU1?lang=eng&suite=pearl
About.com has a good series on beginning guitar:
I don't know where to find it, but the absolute best set of exercises is Steve Vai's 10-hour workout, from Guitar World, circa early 90s. But I lost my photocopy, backissues are in storage, and the last time I tried searching for it I was met with little success.
But anyway, he goes through a set of exercises with specific targets:
He doesn't actually give an example of transcription, but it is vital. If you can write down what you hear (perhaps with the aid of a rewind button), it's much easier to write down what you hear in yur head.
Somebody's got to have one, right? Somebody?