Usually front to back. Reading everything even the stuff that doesn't matter to me like N scale or other than HO stuff in the News and Products and the Product Reviews sections. Anything to make the magazine last more than a couple of hours. I found by reading everything including the page numbers, and by "operating in my mind" the track plans and matching the photos to said track plan as someone else also mentioned, I can make it stretch longer.
Oddly enough I am of the minority. I don't mind the inserts. Usually only 2 and it gives me something to do to prolong the completing of the magazine. I've also discovered that even though my layout room ( of which I'm king) is in the basement, my throne room, like many others, is upstairs. If I quickly place the current issue of MR on the royal reading stand (laundry hamper) then I usually don't read the mag in one sitting. Not that I couldn't, but usually in the official reading position, my legs will go to sleep so I'm forced to move. Yet another way to prolong the digesting of the mag at least until the next day.
In addition to MR I also make sure the latest Walthers flyer gets it's place next to MR on the royal reading stand. By alternating reading materials daily and by employing the same basic techniques to the Walthers flyer, it makes both materials last longer. With the timely arrivals of Car Craft and the Micro Mark flyers, this system seams to prolong the royal reading material sufficiently until a new supply arrives.
When the new issues arrive the Walthers flyer hit's the trash ( we have no recycling for magazines nor can we burn anymore thanks to the transplants from the city) and the MR makes it to the office where it is possibly referenced for a while until it to must go. I've said before in a previous thread a while back, I tried the reference library concept with Car Craft and now I just have thirty years of magazines that I don't use and never seemed to reference more than a month or two back.
Now that I have shared more about my reading and digestive processes than ANY of you ever cared to know, I bid you all a fond farewell. 