Common Mouse Actions in Blender
Blender makes it a point to use as many buttons on your mouse as possible. You have five fingers; you may as well get full use of them. This table gives you some of the most commonly used mouse behaviors.
|Left-click||Place 3D cursor|
|Ctrl+left-click (edit mode)||Quick-extrude|
|Shift+right-click||Add to selection|
|Alt+right-click (edit mode)||Edge/Face loop select|