A medium-action fly rod is good for beginners. Rod length for trout fishing should be 8.5 to 9 feet in length and can be shorter for fishing smaller fish. The weight of the fly rod will depend on what you are fishing. A 5-weight rod is probably the most ideal for trout fishing. Weight of the fly rod should match the line weight and the weight of the fly reel you plan on using. Do not go in for cheap range fly rods which will not last long and will only cause unnecessary hick ups while fishing. Instead, beginners are advised to look for fly rods in the mid-range in terms of price. These will last many years with no worries of outgrowing it.
For beginners i would suggest fly rod with weight 4 that has medium-action. It’s good for learning and because of this light weight, the beginners can practice more and cast more. After every trip, should take care of the rod, clean it with damp cloth to remove dust and mud accumulated in the rod. This improves rods life time.
Reddington rod comes with $150 which is great for beginners and this rod has a moderate action that is great for beginners as it provides added line control over a fast action rod at shorter distances.