What exactly is a Shounen Jump magazine? Or why do animê need magazines in the first place? How does this work?

Shonen Jump magazine was created in Japão with weekly series stories targeting male readers an consists of action/comedy genre

Well Jump is like other mangá Monthly or weekly magazines out there [Shonen Sunday, Shojo Beat, La La...] Basically it takes popular animê and mangá 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 topo, início you might see a "SJ" sign] and sticks chapters in them every week or month. With those mangá series you get Shonen Jump! ^_^

ONLY THE BEST animê MAGAZINE EVER!!!!