Coding tips for the TLC5940 library wanted

I just learned how to use the TLC5940 library to tell the chip how to run. For ever i have been trying to code it from scratch without the slightest hope of success. Now i just need to tell it to set a pin to a brightens and then update, so easy!
For now, i can set any pin to any brightness and change to any pin with any delay. But im interested in creating animations on a grid. It would be a lot easier to group every 3 pins into (R, G, B) values. so i could say at this light, maybe call it light B3 of the grid, and give it three values to tell it what to do. how do i go about doing that?
And for now im using many many lines to define what i want it to do, there has to be a mathematical way to tell it what to change to without me putting in very change. How do i do that?
Any other tips would be super awesome too.

Hi, here are some super awsome tips:

  1. Read this. It isn't what you probably think it is.

  2. Post a schematic of your circuit. Hand drawn on paper will be ok.

  3. Post your sketch. (Warning: we will will be able to tell if you did not read point 1!)

  4. Describe what you want to do. How do you imagine it working if you don't tell the Arduino what to light step-by-step? Do you want to give it some steps and it works out the inbetween steps?

Paul