Jon Kleis reports that "The Arkansas river below Pueblo Reservoir is fishing insanely good right now! ... Good patterns to carry are: Beadhead Hare's Ears size 16-20, Beadhead Pheasant Tails size 16-20, Olive Sparkle Pupa size 16-18, Mercury RS-2's size 18-22, and Barr's Emergers size 18-22. All these fished under an indicator with a good amount of weight above your flies." Read more from Jon's blog here: Colorado Flyfisher.
Orvis 101 Introduction to Fly Fishing
Orvis 201 Streamside