So this is the nicest thing I've created in Blender so far. (Working thru Hirsig's Blender 3D Tuts.)
An animated Rubik's cube would be fun to make someday.
Again, the MyBlender.blend file mentioned in the tut is from Unit #3.
I liked how the spheres/dots were moved to a different layer so they were out of the way.
Here's the front perspective view (wireframe) once all the spheres are created and in position. It shows how cluttered the view can get when working with a lot of objects.
I liked the reminders to use different views to make sure the objects are in correct position. That is something to get used to when working in 3D.
I had to attempt the Join command (Ctrl/J) 3 or 4 times before I got it to work. "Join" shows up in the Undo History (Alt/U) when it actually works. Plus another easy way to tell if join was successful is when you select the object, all the pieces (dots) should be selected with one click.
The other odd behavior was with the Difference command (W). It is opposite of what the tutorial says. Select the cube FIRST, then select the Spheres.
I get lost on what Mode I'm supposed to be in - Object or Edit (Tab toggle), and if I'm supposed to be in Wireframe or Solid (Z key toggle). It's not always clear and it does make a difference.
I noticed jpg within Blender is higher/poorer compression (more artifacts) than optimization 20 within Paint Shop Pro 9.
So I saved the render as png within Blender and then saved as jpg within Paint Shop Pro (or whatever software to get a better quality jpg if desired).
png on the net is usually overkill.
jpg w optimization at 10-20 is usually all I need, if I don't want gif.
Unit 6 is where the world background info is. I already had figured that out earlier because I wanted a nicer background for my renders than that default dark blue.
Also talks about Subsurf.
Then discusses Booleans which is combining objects in different ways (difference, intersect, union) kinda similar to Inkscape I think.
I'm finished with Unit #6, on to Unit #7.