Just so you know what you're reading, here is how stories are usually abbreviated.
MWPP- Moony, Wormtail, Padfoot, and Prongs
MPP- Moony, Padfoot, and Prongs. These stories do not include Peter, and if it does, he is usually sick or visiting somebody.
AU- Alternate Universe. This means that things that will almost definately not happen in the books can happen in the story.
OC- Original Character
/- this is put between initials of the romantic interests in the story.
love/hate- this is usually done (if not always) with James and Lily. Although it's backwards, it means they hate each other and then start to love each other.