saw a pfluger fly fishing start up kit for sale, and would like to learn how o fly fish. any recommended reading or tips to teach myself to learn this beautiful art?

Purchase a how to get started video. Watch it several times. Then go to a good pond where there are some nice sunfish and bass. You will need to practice your casting, and this can be done at home in the baackyard, but with sunneys and bass you will start to catch fish on your first outing. Read books on how to read water, bugs and hatches, and then start to target certain fish and learn about them and what paterns to use when fishing. I have used a flyrod and flies that I have tied for trout, bass, sunfish, pike, muskey, walleye, catfish, suckers, carp, crappy, goldeye. If it swims it can be caught on a fly rod.

As much as I like to hunt, I like fishing better. Fly fishing is an art unto itsself. If you get started and get to the point where you are tying your own flies, to me that is the ultimate of the sport, and any fish caught by that method on a fly you tied yourself, is the pinnacle of the sport, in my opinion.

cool... bought the kit, and am heading up to the bookstore tonight to get a book on fly fishing. can't wait to land my first fish by fly fishing. thanks for the input!

how much backing/fly line/and learder do i use? i can't figure this out.....

Depending on the size of the rod, and what your fishing for will determine the right amount of backing. Generally for 4 to 6 weight rods 100 yds of 20lb backing will be sufficent. 7 to 9 weights you want at least 150 yds, and probaly in 30lb. Your flyline in your kit is the right length. Most lines come in 90 feet lengths. Give or take. Leaders vary depending on whether you are nymphing or fishing dry flies. Standard length however would be 7 1/2 to 9 feet. At the end of your leader you should tie about 18 to 24 inches of tippet, and that is what you tie to your fly. Good Luck! Tight Lines!

I normally just use the tapered leaders from the shop, it doesn't really matter who makes them, and I cheat a bit by using a WF line (makes casting a bunch easier!). With the backing, it depends on what you want to do. My old 10wt salt water outfit, the backing was about 200m, with my 2 wt, the backing is only about 50m or so (smaller reel, shorter casts).
The people in the local fishing shop should be able to offer some advice, just make sure they actually do fly fish before taking them too seriously.
KC Carlin pretty well hit the nail on the head, ecept I was told (by the local fly fishing club) to use 30lb for the 2-6 weights, to reduce the chance of the backing getting caught on itself during that once in a lifetime run of that once in a lifetime fish. Another bonus is if (like me) you use a large arbour reel (to reduce 'set' in your line, and to ease drying) it will reduce the amount of backing you need. With some of the modern larger reels, that can be quite a lot of line.
JMHO, I'm still learning, too!
Best of luck, let us know when you get your first fish on a fly you tied yourself!