In my opinion learning the importance of a leader is way down the line if you are at the point of learning I think you are... Line to line knots are tough to master and there are some issues using a swivel or O ring... not all bad issues, but you should understand them and there are many things far more important to learn first IMO.
I would not be worried about a flouro leader. I would learn to tie good knots with mono and hybrid lines... I would learn that depth is HUGE and how each lure reacts in order to get them to proper depth (or bait if that is how you are fishing).
Learn how to control depth and read water, and you will be 10x better off than trying to learn the importance or lack thereof in regards to leaders.
Also, paying attention to the details of what happened when you caught a fish is huge...
Learn to fish a tube jig, a jerk bait and a senko and you can catch nearly every species in CO... learning those critical concepts behind those three baits is WAAAAAY more important than learning leader concepts (which, by the way, are argued by everyone, so that tells ya how much true fact is involved)....
I wish people wouldn't whore out Colorado waters for the sake of notoriety.