11 birthdays, by Wendy Mass. Actually, you could read any of her books. But there are some books that go in order. Here they are from first to last-
11 birthdays
Finally
13 gifts
The last present
And those are just some of her books, she has a lot more, but I'm not sure if they are in order like the ones listed above.
There's also a website I like, it has stories and quizzes. Here's the website-
www.quotev.com
Hope you like it!