How do I get the lighting to work?

Im a first time user with minimal knowledge of unity. The thing is i dont know which light to use (point, spot, directional) and how can i know that its working?

just drop them into the scene and play the game and they will light up stuff. shadows are a pro only feature.

actually it depends on the needs of the game. However, i recommend using directional light, and set the position of the light near the camera and rotate the y-axis (-y) until the object in the scene has a shading effect from the light.