I bought The Orvis Guide To Fly Fishing last winter and studied it until the middle of February. Then I bought a circa 1929 split cane rod and Orvis reel off of a friend of my father's and practiced casting, stripping, and all of the other techniques. I'd be on my front lawn casting into a roasting pan; my neighbors and people walking down the street thought I was nuts. They'd make cracks like, "You're never gonna catch any fish over here!" (The Truckee River's right across the street from my house) but I wasn't ready.
Finally the payoff. I went out today up near Mogul, applied all of the stuff I learned about reading the river, casting techniques, and sneaking that I learned from reading and talking to oldtimers and caught 28 Rainbows in 4 hours. All on flies that I tied myself.
Fly fishing was just sopposed be a weekend hobby for me but it's seeped into my blood and has become a way of life.