I found this book excellent with clear instructions and beautiful illustrations. Recommended by a friend I know many ladies who have bought it to help their learning of long and short stitch. I also suggest buying the CD if you are serious about long and short stitch.
We are using this book for our groups bible study at church. I sent for this copy for my personal use and it arrived promptly and in good condition, whereas the copies asked for the whole group from a different seller took over a week to come.