If you are a fangirl living the nerdy lifestyle, check out the Fangirls Guide to the Galaxy Signed Edition. This book is just what you have been looking for. It is the ultimate handbook for nerd girls.
This copy is autographed and is also a fun feminist take on the often male-dominated world of geekdom. This one is for the ladies and only the ladies. No boys allowed. This will be an informative and fun read.
$15.99 at ThinkGeek.com and $9.99 at Amazon.com. It makes a great gift.