Requirements 5 and 6 for the Scout rank are:
5a: Show how to tie a square knot, two half-hitches, and a taut-line hitch. Explain how each knot is used.
5b: Show the proper care of a rope by learning how to whip and fuse the ends of different kinds of rope.
6: Tell what you need to know about pocketknife safety.
A great place to learn about tying knots is https://www.animatedknots.com/
Here are a couple of examples that I made:
To learn about pocket knife safety, go to this site for the Whittling Chip to learn the rules.