Kathie,
Most of my knowledge about Fly Fishing came from other Fly Fishers. So, iif you are truely interested, submerse yourself with knowledgable people. I don't recomend buying books, becuase you will read them once and forget that you own it. However, with XMAS approaching, a gift of a book is nice. I was given the LL Bean Fly fishing book. It's helpful but supplies minimal info. Personaly, I feel the Internet is the best source.
Your question about gear must terminally be answered by you. You will discover what you like and what works for you. Sure, I can tell you to buy a Down Stream fly box, use only St. Croix rods, fish Cortland line, and Airflow leader, but that is what I prefer (shameless plug). Test out new things and find what you like. Ultimately, you have to be happy.
My final suggestion is not to go cheap to see if you like fly fishing because you will. I can't explain it, and i'm sure 99% of the members of this board can't either, but you will never turn back. I have gotten a few people to start and they feel the same way, Fly Fishing is undescribable. So buy mid-ranges gear, so you will still be able to enjoy it a few years down the road. Plus, to cheapies = about 1 pricy piece of gear.
By the way, fly fishing is expensive; when compared to bait and spin fishing.