Knowing your knots is critical to a good day on the water. Without good knots, you are apt to lose flies, snap off tippet or even lose a big fish if your knots fail.
With that in mind, watch Simon Gawesworth at Far Bank Fly Fishing School give some tips on a handful of knots that are useful for nearly any scenario.
Practice, practice, practice so knots are one thing you have down when you go to the river. Then you can concentrate on your cast and catching fish.