Floating fly lines are the most common and most popular fly lines. They are necessary for dry flies but still allow anglers to fish nymphs or wet flies as well. Floating fly lines range in size from 000 to 14 weight and match the number on your rod. Trout fisherman use floating lines about 90% of the time and if you are a beginner or just getting started you'll definitely want to start with a floating line. Within this family of lines there are some options. Lines can be balanced with additional weight in the head or the front which make them better for shooting line or roll casting. Some lines have a very long delicate head for presenting dry flies. There are also some lines specifically built for nymph fishing. Rest assured however that most lines are general purpose and can be used for a variety of situations.