i'm new in blender i'm max user and now whant to learn blender. but i see (or i think) we have same HotKeys for "deselecting polygons" and "edge ring select" (when using 3ds max HotKeys Preset).
as a result we cant deselect polygons correctly
this two HotKeys have same keys (shit + ctrl + alt + select mouse)
"3D View > Select or Deselect All" = "Mesh > Edge Ring Select"