Harry Potter Prequel.

When the Harry Potter series ended, the whole wizarding community mourned.

It was like, "what are we supposed to read obsessively now?!!!" :(

Almost everyone craved for J.K. Rowling's stories. Good thing she wrote again. :)

There's this "The Tales of Beedle the Bard", a handwritten children stories, that was mentioned in Harry Potter and the Deathly Hallows. For more information about this book, see Wikipedia. :D

Another is the Harry Potter Prequel. A story that was set three years before Harry's birth and featured James and Sirius being confronted by two policemen.

It is available online. Click here, then click "Read our authors' stories". If you are having a hard time reading Jo's handwriting, see Mugglenet. Enjoy! :)