Time for action – making faces out of vertices and edges

The most fundamental unit of a mesh object is the vertex. So, now, you are going to make a vertex, and when you make a second one, the two will be connected by an edge. Then, you continue until you have enough vertices for a face:

1. Load a new file.
2. Press 7 on the NumPad to get the Top View. Press 5 on the NumPad to get the Ortho View.
3. Press the Tab key to get into Edit Mode.
4. Click the 3D Manipulator button in the 3D View header, as highlighted in the following screenshot, so that the 3D Manipulator icon does not show in the 3D View.
   
5. Press A two times to make sure that all vertices are selected. Press X, and then select Vertices from the popup menu to delete them.
6. Look in the lower-left corner of the 3D View window. It still shows that the active object is the cube. Only the data block of the cube remains. It has no connections to any vertices, edges, or faces. You deleted them. However, to delete the cube itself, you would still need...