The Fangirl's Guide to... something

Back story:  Amazon had been hounding me to buy The Fangirl's Guide to the Galaxy.  I guess that's what happens when your shopping history consists mainly of Harry Potter movies and Pop! Vinyl figures.
I was about to cave when I visited my local library and I spotted the book sitting on a center table display like a beacon shining directly into my nerdy heart.

One of us!  One of us!

After reading it, I realized this same beacon was only masking the song of bad book sirens that were waiting on the rocks to crush my geek girl heart into dust.
Ok... no more seafaring references.
Sam Maggs, if that's your real name, I really wanted to like your book.  I really did.  The title grabbed my attention and the book's petite size made me feel like I was reading the personal journal of a fellow fangirl.  And then I read it...
If I was 12 or 13 and looking for a ready-made identity to morph into, I'd probably think Fangirl's Guide was an awesome book.  The first chapter explains what exactly a fangirl is.  Um... it's in the word.  A girl who is a fan of... something.  Then Maggs goes on to detail various fandoms such as Potterheads and Trekkies. 
Personally, I believe you can be a fangirl for chemistry or General Hospital or craft beers.  Someone can "geek out" about something that isn't a stereotypical "geeky" subject.  Fangirl's Guide just seemed so... basic.  If Tumblr had published a book about its biggest fandoms, it would be Fangirl's Guide to the Galaxy.

Other low points:
The little interviews with geek girls who made it big scattered throughout each chapter were not insightful at all.  They were asked to define what a "fangirl" was and they all basically stated a person who is passionate about something.  Thanks for that brand new information!
At one point, she described "levels" of fandom and how a fangirl might acquire a tattoo to represent her queen bee fan status among her peers.
Her tips for con going were nothing earth-shattering that you couldn't find with a quick Google search.
She gave the impression that geek girls will always run up against some form of discrimination from geek boys at conventions, comic book shops, gaming tournaments, etc. based solely on the fact that they are female.  Throughout my years of being a fangirl, I've only run across one rude person, who happened to be male, and who chose to act from the safety of his keyboard via Facebook.  (A simple unfriending solved that problem.)  Maggs gives the impression that cons and comic book shops are full of meanies just waiting for the chance to quiz some poor unsuspecting geek girl on her knowledge of Starfleet ships.
At the end of the book, she touches on feminism and the roles of women in fiction.  Because the subject of over-sexualization of women in comic books and video games has never been broached before this revolutionary book was published.

In the end, this book was a huge disappointment (that I'm glad I didn't actually pay for).  I was hoping for a book of personal anecdotes about forays into cosplaying or the first time someone got schooled at a Pokemon tournament.  What I got was a "how to" guide and no one can tell you how to be a fan of something.  You don't need a book or a website or a blog to tell you how to love something.  You only need passion.
That'll be $19.95 please.