>>2774
>book on perspective
Nope, sorry - I can't think of any book as useful as drawing along those lectures.
I guess you could read only Scott Robertsons book, but I don't think it's enough - it's more like collection of perspective tools instead of explanation why and how they work.
You could also read "Perspective for comic book artists" or "Perspective made easy" - they explain more than Scott. They're less technical though; they don't mention techniques that are less commonly used.
If you want to learn like in art school, then you should just watch those lectures.
If you want to focus on drawing illustrations (instead of product designs, concept art), then books that I mentioned should be enough.