Here it goes..
Alright, so, start with a cube.
Now, select all 6 faces, and inset. Make the inset go about halfway across the faces.
You should end up with this. We have 108 tris currently. We will have 72 faces when we end this tutorial.
Alright. Now, we get to the part where we save some polygons. Either A: Loop cut the smaller squares out (recommended for more advanced figures with curves and spanning across multiple faces) or B: Delete the base faces. These pics show you which things to do.
A. For when you delete the faces, delete these. Be warned, if you select ALL of them, then click delete, you will screw the model up. Select all of them on one plane at a time.
Afterwards, click separate to make them separate objects.
B. Now, for when loopcutting, you can select all the lines in the whole image without worrying about messing anything up. Select the highlighted lines to loop cut.
If loopcutting, remember to combine/delete the 4 trapezoidal faces that were used when insetting/extruding.
You should now have 6 objects.
Then, after that, hole out the polys facing the larger square/base.
(Holing is done by going to face mode, selecting the face, and selecting Material -> Hole, it should turn blue)
There ya go, saves you 30 here, saved me 126 polygons on a 528 polygon model, easily cutting the percent of polygons by about 25 percent.
Hope it is easy enough to use...
Ending Picture:
