Dry hopping will add flavor and aroma to a beer. It will not add any bitterness since hops have to be boiled to extract the bitterness. If you are a hop head I would suggest trying out dry hopping. I like to dry hop my IPA’s but you can try it with other beers. There are a couple of ways of dry hopping. You can simply add the hops right to the secondary or do what I do and add the hops into a muslin bag along with marbles. The marbles will help sink the bag to the bottom. I will boil the marbles and muslin bag in some water in a sauce pan for a few minutes to sanitize them. I then add 1 or 2 ounces of hop pellets and the marbles and then tie the muslin bag in a knot and add to the beer. I usually will let this sit for about two weeks and then bottle. The reason I like the muslin bag is it seems to keep the hops in the bag when I transfer. When I just added the hops to the secondary and transferred, a lot of hops were transferred also. It also seems to take longer for the hops to settle to the bottom when they are loose.