The first knot book I bought over 25 years ago was The Marlinspike Sailor by Hervey Garrett Smith. It had the directions for the Star Knot. I tried to tye it and after about a year I finally gave up. After another year I finally tyed my first Star Knot.
Outside of the turks head knot variants, there are few techniques that are appropriate for making paracord knife wraps. I found an image of a knife wrap that David Hopper made. It was a recreation of an old sword wrapping technique