You should now be in Blender with a basic cube in Edit Mode.

Press the Middle Mouse Button and move your mouse.  This should change the view of the cube.

The G Key.  (Grab)

1. Right Click on one of the vertices of the cube. 
2. Press the G Key.  (G stands for Grab).
3. Move your mouse.
4. Press the Left Click Button.

The B Key.  (Selecting)

1. Press the B Key twice.
2. You should get a circle like this. 
3. Drag your circle over the vertices and click.  This lets you select a lot of vertices. 
4. When you are done selecting press the right click button.

The S Key.  (Scaling or Sizing).

1. Press the S Key.
2. Move your mouse into the cube.
3. Left click when you are done scaling.
4. Press the S Key.
5. Move your mouse away from the cube. 
6. Left click when you are done scaling.

The E Key.  (Extrude)  Extrude means to pull and create more vertices, edges, or faces.

1. Press the E Key.
2. Click Only Edges. 
3. Move your mouse.
4. Left Click when you are done extruding.
5. Press the E Key again.
6. Move your mouse again.
7. Continue this process a few times. 

Changing Colors