Here are the supplies.
First, measure it up to 6 inches.
Next, fold the back of the wire where the ruler meets.
Repeat that until there are three strands of wire.
Put a strand into a hole.
Put another strand into a hole.
Put the final strand into the last hole.
Fold the strands into rings.
It should look like this, or smaller.
Then tape both ends of the wire.
Make sure to do all three rings!
Add a title.
(Optional if your book is fantasy) Add a map of the main setting.
(Optional) Add a table of contents.