Order to read Higurashi no Naku Koro Ni
Basically, when it comes to manga that's the recommended order:


Onikakushi-hen
Watanagashi-hen
Tatarigoroshi-hen
Himatsubushi-hen
Meakashi-hen
Tsumihoroboshi-hen
Minagoroshi-hen
Matsuribayashi-hen


Optional (Extra Stories):


Utsutsukowashi-hen
Yoigoshi-hen
Saikoroshi-hen 
Onisarashi-hen
Batsukoishi-hen 
Hirukowashi-hen


All of these are different iterations of the same period of time, but they focus on different aspects.

Though personally, I still recommend reading the Visual Novels: Higurashi no Naku Koro ni &amp; Higurashi no Naku Koro ni Kai.