This week's book giveaway is in the Mac OS forum. We're giving away four copies of a choice of "Take Control of Upgrading to Yosemite" or "Take Control of Automating Your Mac" and have Joe Kissell on-line! See this thread for details.
Even if you are developing plugins, I think it may still be useful to read a general Eclipse book first. (Then read Dan/Eric's book second.) I see value in learning how to use Eclipse to have a stronger foundation.