The baby sitters club books! I loved these when I was a kid! Read them all.my sister had the Babysitters little sister books. My girls are now reading the little sister books we found at a book sale recently.
Sideways Stories from Wayside School, by Louis Sachar. (Avon Books, Humorous episodes from the classroom on the thirtieth floor of Wayside School, which was accidentally built sideways with one classroom on each story.
The Berenstain Bears ~ The first series aired in the the books have been in print for over 40 years. That doesn't change the fact these bears were a big part of my childhood. I read the books and watch the series on my VHS tapes for years.
I remember getting a letter from my childhood penpal on black paper and thought it was the most amazing thing ever. I really do miss them and the black paper notebooks that they were made to write on so they'd show up better.
sweet valley high series (book 1 by: Francine Pascal). I read these at the age of 12 and loved them, a new book came out every week that I can remember and mum would get me one. I nearly had the whole collection.