Calling all Midwest Fishermen

Most of my fishing is done in northern WI. We fish for bass, bluegill, crappie, pike, and muskie. The most recent years of going up there Ive mostly fished for walleye. By the way, my brother and I were talking the other day about fly fishing. There are a bunch of little rivers and streams in the north woods and we want to fish them. Any tips for getting into fly fishing? From the research ive done on rods and reels, they seem pricey.