Dynamic Lighting
Roblox has recently realeased Dynamic Lighting. Dynamic Lighting is a new lighting feature which allows you to add more realism to your place. When you go to ROBLOX Studio then open a place and go to "Lighting" Tick "GlobalShadows" then you will have shadows. If you want to add light, click on a brick and go to "Basic Objects" Then double click on PointLight or SpotLight. Should be straight forward from there. Put lighting in the approptiate places, or it may look wrong!