If you like fiction, but the kind of fiction which could really happen, try the Ellen Hopkins books. I know they just became available on the iBookstore last week or the week before, but I absolutely love them. I have them all in physical book form, but I rebought them again on the iPad to take everywhere, and they are relatively cheap on the iBookstore ($8.99).
There are currently six books available:
In order of publishing:
1. Crank
2. Burned
3. Impulse
4. Glass
5. Identical
6. Tricks
Number 4, Glass is the sequel to Crank, and probably the two best of the books. The books really aren't a "series" as they are all different stories/characters (except numbers 1 and 4, which are, and book number 7 called "Fallout" which will be available in September is the sequel to "Glass"). But really, really good reads. If you have any kind of heart/soul, you will be very emotional throughout the books.
Just to quickly review:
"Crank" is about a girl who becomes addicted to meth, and the book shows how this affects her life, friends and family.
"Burned" is about a girl raised in a very strict, religious family, and deals with her struggles to break free from her own 'hell'.
"Impulse" focuses on three different characters throughout, and their struggles with their past and their current predicaments (teen suicide).
"Glass" continues on the book "Crank" with the same character now a little bit older, and shows her continued struggle with drugs, and now with crystal meth.
"Identical" is about two identical twins (my personal favorite of the series).
And "Tricks", I sadly have not read yet, but I know it, like "Impulse" focuses on a few different characters, rather than having one centralized character.
Read these if you get a chance. You most likely won't regret it.