The Humble Bundle group has a great selection of Make: books on electronics in a bundle available.
The two books Electronics and More Electronics are probably worth the price alone.
How are the electronics books structured? are they a collection of projects, a guided learning format, or quick reference type format?
The electronics books are chapters with projects that get more complicated as they progress. I highly recommend them.
The electronic encyclopedias are more reference with some theory on the different function. I’d also recommend them.