Malt extract is made from barley and comes in two forms, dry and liquid. It has a lot of fermentable sugar which produce alcohol and carbon dioxide . Hops are the spice of beer.
Hops comes in a pellet form which is convenient for brewers to use.
When added in the beginning add bitterness because they are boiled longer, added at the end of the boil hops add aroma and other flavors . Water Tap water is usually fine unless yours tastes exceptionally bad. Don't use distilled or water that comes from reverse osmosis systems as they don't have the minerals necessary for the yeast. Yeast Dry brewers yeast convert the sugars into alcohol and CO 2 . You will need 10 - 15 grams.