Well Jump is like other Manga Monthly or weekly magazines out there [Shonen Sunday, Shojo Beat, La La...] Basically it takes popular anime and manga series that relate to shonen or that are Shonen Jump mangas [If you own a volume of Bakuman, Nura,Bleach, Naruto, One Piece, Yu-Gi-Oh!, or Shaman King then look on the side and close to the top you might see a "SJ" sign] and sticks chapters in them every week or month. With those manga series you get Shonen Jump! ^_^