PJO - Percy Jackson and the Olympians. This is the main series narrated by Percy Jackson himself. HoO - Heroes of Olympus. This is the sequel series narrated by the Seven (Percy, Annabeth, Hazel, Frank, Piper, Jason, Leo) along with Nico and Reyna. MCGA - Magnus Chase and the Gods of Asgard. Based on Norse mythology, this series follows Magnus Chase (Annabeth’s Cousin). Percy and Annabeth appear briefly, however mostly this one stays away from the world of PJO and HoO. ToA - Trials of Apollo. This series is narrated by the god Apollo, following his adventures as he lands on earth as a mortal. This is the only series that is currently ongoing, so beware of spoilers if you are not yet up to date. Ship - To ship someone is to think they have a good relationship or would be good together. A ship name is the two people’s names put together. Example: I totally ship Percabeth! OTP - This stands for “One True Pair”. This is the couple you ship most of all. Canon - Canon is what actually happened in the books, the real facts not fanfiction. If a ship is canon, that couple actually exists in the book. Fanon - This is the opposite of “Canon”. Fanon is used for describing relationships that don’t actually happen in the book, or ideas based mostly or completely off of fanfiction.