This isn't as sequential as the example for drawing the room itself, but I wrote a bit on the image itself. You can find the drawing fundamentals thread here
On a personal note, I can understand if you don't think that this is the right way to learn drawing. All I can say is that these are the exact exercises I've done in Art 120 and it has improved my drawing immensely.
I just have a couple requests. First off, read more than the first post in the thread if you want to leave a comment.
Secondly, if you've got a problem with it or me, send me a PM and we can work it out or agree to disagree. It doesn't belong in the thread itself. When people look at it looking for the first time, or for updates to the exercises, they're going to have to search for them between all the posts that have absolutely no constructive value.
I don't have to give examples of it because you can look at the thread and see what I'm talking about. So please help me out. Comments and criticisms are welcome, but please think about them and make it constructive. I would really, really appreciate it.