[discipline]

Here's a simpler version. It has only 8 pages, but the pages are somewhat larger and the whole booklet sits flatter in a pocket. Here goes:

1) Fold (8.5x11) sheet of paper in half (like a hamburger, not a hot dog - in other words, don't fold it "lengthwise".)(Make all folds like this).

2) Fold in half again.

3) Fold in half again.

4) Now open (twice), so you're looking at the paper after the first fold. You should be holding it in landscape orientation in front of you. The fold should be at the top and the paper should be open at the bottom.

5) See the vertical line running down the center? Rip (or cut, but ripping works just fine) that line to the halfway mark (the center of the page). (You're almost done.)

6) Now open the paper all the way, and refold it once lengthwise (like a hotdog). You should be able to grab an end in each hand and see an open diamond shape (rhomboid) in the middle.

7) Gently push the two ends towards the center. You'll see the bottom page start to collapse and fold into the page in your left hand. Just keep folding the pages onto each other, and fold the 4th/last one to make the back page/cover. Voila!

Let me know if I need to clarify my instructions.

[RBerenguel]

This is the idea in pocketmod.com. I see I should have linked it from my own post, for people wanting bigger pages. Also, if you happen to have A3 paper (or "double Legal"), you can use my method to create a bigger version of yours with more pages