I've recently acquired Loomis' Successful Drawing from the library and wish to get some serious studying in. However, seeing as it begins with teaching perspective, I've hit a little snag. It's one that I've bumped into a lot when I see this subject in art books.
Whenever you find a section focusing on other subjects like drawing the head and such, you'd usually receive a handful of step-by-step images showing how the object was constructed. However, when it comes to perspective, I rarely see a plan treated the same way. They always seem to just have an entire image or two fully complete, with only worded instructions above or below it not nearly explicit enough for you to go by(such as "establish the horizon and vanishing points and then have the sides recede into the VPs" without saying where to put the first line, what particular side you're supposed to start with, and whether or not you need to draw your lines going to the vanishing points or from the vanishing points). And when there are some steps showing how it's done, there aren't nearly enough.
So what I'm wondering is, do art books rarely have handfuls of visual steps for each perspective plan because everyone constructs, say, a particular plan slightly different and in their own order of lines(but all still using the horizon and vanishing points as guides, of course)? Or, are those who learn from the same book supposed to recreate the plan they see in a certain "correct" order of intersecting lines and so forth?