Master the Rack
Most people have a very vague idea of how to actually go about setting up the rack. It is really much less complicated than people make it. In traditional 8 ball there is no need for any of the balls to be numbered except for the eight ball. All the other balls could be yellow and red, like in this video.
When setting up the rack, the only thing that really matters is that you have two opposite colors on the bottom corners of the triangle and eight ball in the center, other than that go wild.