Fight out the battle, with players taking turns to act with their army, using the rules that follow. This chapter starts with basic rules that apply to all models, and cover the standard sequence of moving, shooting and fighting. These basic rules are all you will need for infantry models, and will get you by for your first game or two. They are followed by extra rules that apply only to certain models such as monsters, heroes or warriors armed with unusual weapons. Finally there is a chapter that explains the effects of the fantastical terrain of the Warhammer world.
Source: Warhammer Fantasy: 8th Edition