Flourish & Blotts.

A large wizarding bookshop filled with shelves stacked to the ceiling, Flourish & Blotts is the primary - and perhaps only - supplier of textbooks for Hogwarts, though of course that's far from all they sell. The shop holds occasional book-signings, such as when Gilderoy Lockhart stopped by in 1992, and sells books via owl. In addition to the store's manager, who at times helps customers himself, the store also employs an assistant manager (paid 42 Galleons a month) and an assistant. The job is not altogether easy, as wizarding books might attempt to bite or simply be completely invisible, and fights are apparently commonplace enough that a classified posting for a new assistant manager requires that he or she be good at breaking up fights.