Different knots have different functions, so it's always good for any angler to know how to tie a few different knots for the different situations we find ourselves in along the water. For example, there would be times when you want your fly to be able to twist & move freely from the tippet without causing tangles in your leader. Other times you might want your fly to remain tight to the tippet. It all comes down to the type of fly you're using & how you want that fly to move in the water.
Most of us know a few knots & we use them all the time. If that works for you, fine but look this list over anyway. You might find a knot you like better - one that might be easier to tie, holds better, & is faster to tie. This is the case with me: typically when I need to tie a knot somewhere in my setup, the trout are rising, my hands are shaking a little from excitement, & I'm in a hurry. So if I can tie a knot that's easy for me to tie, holds very well, & gets me back in the game faster I want to know that knot! This reference is a good place to look for new knots that just might become your favorites to use.
You can see & read this great material HERE.
I found it so valuable, that I've also added it to the Links page on this site.
Special thanks to Boy Scout Sean & his assistant troop leader Matt for sharing this resource with me. Thanks, guys!!