Been spending the evening reading.
It seems the easiest way is to get a MAX7219 controller chip and using the library in the playground. Question:
Tutorial says to use the following command for individual LEDs:
void setLed(int addr, int row, int col, boolean state);
Is the "void" there just to make the program work, or does each line in the code for this command require the word "void" in front of it? In other words, would this work (assuming values are put in the parentasis):
setLed(int addr, int row, int col, boolean state);