Good luck with the book. If one buys a papercopy does it come with an electronic copy?
I bought the OCA Java SE 7 Programmer I Study Guide by Liguori and Finegan and was very disappointed that only one eCopy could be downloaded and that copy had to be used on the machine it was downloaded on.
I was hoping to have one on my work computer and a copy on my home computer. Maybe you could use a different anti-piracy method.