Re: books on basic sailing..
ASA SAILING MADE EASY TEXTBOOK - 101
This is the textbook that ASA uses for 101. They should provide it to you along with a logbook with your registration. You can look on the ASA site, if you haven't already; it covers the knowledge needed to pass the 101 exam in the Standards: here:
Basic Keelboat Sailing - ASA 101 - Certification by American Sailing Association
Do a google search on ASA 101 test questions, there's a couple of power point review sessions posted by instructors.
Good Luck..Have Fun!