i cant use local.
i click local and click on object… but nothing happens… pivot point doenst change
[Local] will make the last point you modify become the pivot point…It will not showing anything on the viewport until you rotate the object… 
_Revel
oh really… okay then… one more thing :
how can active edit mode…i cant click it…
Well, grayed out [Edit] button usually because you drop the object to the canvas (which in theory become a 2.5D object) and select another object/ 2.5D brush/ draw another object on the canvas…basically things that doesn’t relate with the 3D work anymore…
You can recover your object into 3D state again by clearing the canvas (ctrl+n) and draw a new one then press T for enter [Edit] mode…
*Btw you can check in the FAQ section to guide you how to post an image in here in a correct way, it will easier for us to see…ohkay
_Revel
Ok