Just the New Moon movie companion, if that counts.
I would love to read the Bree Tanner story.

I actually have no idea...

It's not that it's too many to count, more that I just don't keep count, y'know.

does midnight sun count?

Beedle the Bard, Quidditch Through the Ages.

Anything associated with Summit Entertainment, Warner Bros., Smeyer, or JKR counts. Anything else doesn't.

In that case, I change my answer:
Beedle and the Bard, Fantastic Beasts, Quidditch, the prequel, Bree, and Midnight Sun.

Beedle and the Bard, Fantastic Beasts and were to find them,Quidditch though the ages

I read the Twilight one, Part 1.

It was sooooo goood!

Beetle the bard
Quittage through the ages
Fantastic beasts and where to find them
Bree tanner

If these count I read more

Hp film wizzardry
Unofficial guide to the mysteries of hp 1-6
Harry potter should've died
Nightlight a twilight parody
That one on the making of the twilight movies

Sadly, I only read the Shit Life of Bree Tanner.
Yes, it was called Short Second Life, but her life really WAS shit.

Bree Tanner (which I thought was better than the TS), QTTA, Fantastic Beasts, Beedle The Bard.

The Tales of Beedle the Bard. They have it in my library.

I read The Tales of Beedle thhe Bard.

Bree Tanner and Beedle the Bard :)

bree tanner (whos life I thought was funner to read about than bellas)
quidditch through the ages
fantastic beasts and where to find them

and not sure if it counts
midnight sun
guide to the twilight movie
and the HP prequel

Quidditch Through the Ages
Fantastic Beasts and Where to Find Them
Twilight the Graphic Novel
Tales of Beedle the Bard
Twilight Movie Companion
New Moon Movie Companion

... and some others that I can't really remember right now. ^-^'

- The Tales of Beedle the Bard
- Fantastic Beasts and Where to Find Them
- The Second Short Life of Bree Tanner

I have Quidditch Through the Ages but I haven't read it yet.

-The Tales of Beetle the Bard
-Quiditch through the Ages
-Fantastic Beasts and Where to Find Them
-Midnight Sun

But then, I've read Harry Potter & Philosophy, Do You know Harry Potter?, The Great Snape Debate, Harry Potter and the Gospel, and all these J.K. Rowling biographies. Do they count?

Beedle the Bard...

I only read the twilight graphic novel, that's only because I liked the art, i wasn't into everyone else.

I've only read Tales of Beedle the Bard.
But I'm interested in reading Bree Tanner, Quidditch Through the Ages and Fantastic Beasts and Where to Find Them.

tales of beedle the bard and fantastic beasts and where to find them

The three HP companion books.