I've just released another free video tutorial on How to Draw Basics of a peanut butter jar and a Playstation controller. I also show a 3D model of a Playstation controller to show how one can "see" complicated shapes and break things down while drawing. The 3D program used is a free one called Blender 3D and I also do a video showing where to download it, basic navigation and links to other free video tutorials if you'd like to learn blender.
All this is on my website at:
Would love to hear people's comments and feedback.