There are many variations of this process on the Instructables website, but I think mine is the only one to give you CONTENT for the little mini-book!
I learned how to make this kind of book many years ago, but I couldn't recall the exact steps, so I searched the Instructables website and quickly found instructions. (I gave credit to that source in Step 1.)
Much later, when I started to "tidy up" my Instructables and give them a more uniform appearance, I found a very old Instructable that called this type of book a "Pocketmod." That instructable, and many others, featured links to the PocketMod website.
I clicked the link, and learned that the PocketMod developer had set up a Kickstarter fund to update the website. I quickly joined in, although the project was already funded.
I just LOVE being a part of the Instructable community!
Step 1: Print. Make First Fold.
Print the PDF.
Make a "hotdog fold" down the center of the page, as shown.*
* Thanks to LydiaH19's Instructable, which was the first I found when I searched for a reminder of how to make this kind of book. I am copying the use of the terms "hotdog fold" and "hamburger fold!"
Step 2: Second Fold.
Make a second fold, this time "hamburger fold."
Step 3: Third Fold.
Make a third "hamburger fold."
Step 4: Open. Cut.
Open up the paper and make a "hamburger fold."
Cut as shown.
Step 5: Open and Re-fold.
Open up the paper again.
Make another "hotdog fold" so that the printed side is out.
Step 6: Align the Pages.
Set the paper upright and squeeze together until the cut portion forms a square.
Continue to squeeze inward so that the cover and the first page are back to back and the green bug page and the three-bug page are back to back. I have added clips on these pages in the illustration, but clips are not needed.
Step 7: Make the Pages Form an "x."
Here's another angle so see how the pages line up.
Step 8: Flatten the Pages. Crease.
Flatten the booklet with the pages shown on top.Crease everything as tightly and evenly as you can.
Step 9: Fold Into Final Position.
Now fold the flattened pages into a final "hamburger fold." Crease.
Step 10: (Optional) Fasten Together the "insides" of the Pages.
I like to add a piece of double-stick tape (or a scrapbook mounting square) to prevent pages from opening up.
A glue stick could also be used.