It seems like knots died with the Boy Scouts. Knots used to be a skill that men had despite their background and it was impressive when the need arose. Today, I am not sure kids even know how to double knot their own shoes at 10 years old. That said, there is still plenty of room for cordage skills in this world. Knowing how to tie the right knot for the right situation can save the day or at least make it an easier day.
This is a great article on 7 knots that are all pictured in the article. There are brief descriptions about the value of each knot as well. You can take wrangle your knot tying skills back from the clutches of history. With very little practice you can become a paracord wizard. If nothing else its an impressive skill.