Copia is giving away Linda Goodman's Sun Signs for free.
Linda's book is the number one astrology book of all time for many reasons: it's clear, insightful and it's fun.
http://www.thecopia.com/catalog/deta...?catId=8235695
You just need to register, and download their eReader, which is free and is actually awesome for writing notes (I use the desktop app). But you can move it to Nook or Sony or almost any device.