Sorcerer Magazine is a magazine that details all about guilds and their functions. It's published every Wednesday. They introduce new hot magic items and popular conferences, as well as publish photos of popular Mages. For example, Syrena had already been their model many times, and Lucy had also been invited, though Natsu and the others ruined it.
Sorcerer probably has many active redactors, but currently the only known one is Jason, who is extremely in love with Fairy Tail and its wildness.