Step 1: Getting Stuff Together!
-A4 Paper (I found in my area it's the cheapest kind of paper)
-Precision crafting knives
I made another one before that used wood glue, so the binding of the paper is completely up to you, this may mean wood glue, hot glue, or book binding materials would be needed instead.
Step 2: Cutting the Paper, Folding the Paper
I tore each sheet of A4 until it made four A6 sheets.
I then took each of the now A6 sized sheets, and folded each one in half, to make eight A7 pages per A4 sheet.