If you're learning how to go fly fishing for the first time, there are several things you need to learn. One of the first things you need to learn about is choosing the right fishing gear and equipment. Not all fly fishing rods and reels are the same. The first thing you will need to learn is what type of specific fly rod you need.
Fly fishing rods are numbered, and the numbers represent how the rod is (strength-wise) built. A smaller number is designed for smaller fish, while a larger number is designed for bigger fish. So first thing you want to know is what type of fish you plan to be angling for. Are you angling for bass? For trout? Grayling? Salt water fish? Whatever your choice is, that should influence what type of a rod your want.
So if you're looking for your first fly fishing rod, a #4 will be able to handle something like rainbow trout, brook trout, and other similar species of fish. If you're looking for a really stiffly built rod like a #12, you're probably angling for a bigger game fish: Northern Pike, Muskie, or Tarpon.
Most fly fishing is done for smaller species of fish, or mid level. Blue gill, crappie, grayling, trout, and bass are common species of fish that fly fishing anglers love to pursue. So watch the number, because that will determine if you have the right gear or not.
The one other number to look at the length of the rod. There are various choices and preferences, but for beginners slightly larger rods can help, as long as you're not in a really tight space. The length can make it easier to cast the fly line longer distances, and you can have better control without getting tired. The reverse is also true, though. If you are going to fish in a small creek with overhanging branches, then you will want a fly fishing rod that is smaller, as to avoid snags and snares.
Then the best advice is just to get out and fish! Like anything else, fly fishing is learned through practice. Follow this advice and you will find the perfect fly rod for your needs and you'll be out catching those fish in no time!
And to help you out in that pursuit, I'd like to invite you to check out my web page at http://www.squidoo.com/make-your-own-fly-fishing-lures for free articles, information, and other helpful hints to help those outdoorsmen like me who often have more enthusiasm than natural skill.