Playing Warhammer is not as complicated as people sometime worry it is. From building and painting your models to actual battle, you as the gamer, can decide how deeply you want to enter the world. Take a look at the below "beginners guide" and you'll see some of the basic gameplay.
About Warhammer: Warhammer is a tabletop miniature wargame with a medieval fantasy theme that simulates battles between armies from different factions.
As in other miniature wargames, players use miniature models (minis) to represent warriors. Players take turns moving their model warriors across the playing field and simulate a battle. The outcomes of fights between the models are determined by a combination of dice rolls and simple arithmetic. Though the gameplay is mostly based on medieval warfare, it incorporates fantasy elements such as wizards, dragons, and magical spells.
The Warhammer setting is inspired by the fiction of J. R. R. Tolkien, Poul Anderson and Michael Moorcock.