Here is another Blender Tutorial on adding multiple colors to one object in blender. It's a little quite, so you might have to turn up your volume. Enjoy.
Well, if you remember the last 4 grades of primary school, you'll be alright.
Basically, it's whatever you wanted to know and we kept it a secret... until now.
This Blender tutorial teaches you how to make a Heads up display that will display your score. It will also show you how to make it so that that score increases when you collect a certain object.