Learn how to tie the Alpine Butterfly Loop — a strong, dependable knot for creating a fixed loop in the middle of a rope.

Instructions tell us how something should be done. They guide us, step by step and in the right order, so that we can achieve our goal. You need instructions if you want to bake a cake or cook a meal.

From how to French brain or play the guitar to how to unclog a sing or perform CPR, you can learn all kinds of useful skills on YouTube. We at Mental Floss are always eager to learn new things and ...