This is the second in a series of videos about how to build an RGB colour mixer using Visual Basic.NET. This series covers the use of the VB.NET graphics object, along with a range of related objects and their methods for drawing and filling shapes on a Windows Form. This particular video includes step by step instructions on how to write VB.NET code to draw lines and basic shapes such as rectangles and ellipses using pens and brushes. This video also introduces the Intersect method of the Rectangle object, which can be used to determine the overlapping area of two rectangles, and the Region object which can be used to store the overlapping area.