extruding handle of mug I am making the coffee mug of "blender guru" in donut tutorial,
when I extrude a face for handle and extrude again for second time,when I want to rotate it.the rotation influences whole the mug n faces.please tell me what should I do.
you have "proportion editing on", this means you'll edit all the vertex inside the "area" controlled by the "proportional size".

disable it clicking on this icon: