Recommended study & reference materials:
General Class License Manual (Softcover)
The ARRL Extra Class License Manual Book with CD-ROM
2013-2014 ARRL Repeater Directory Pocket sized
Arrl’s Small Antennas for Small Spaces
The ARRL Handbook for Radio Communications 2013 softcover
You might want to also list Gordon West’s books. For someone like me who had no electronics background to begin with, Gordon’s books were much more user friendly and basic.