[jamesxv7]

I'm impressed by the responses generated in this conversation. My expectation was to get several links and start browsing each one of them. However, many have agreed that the best way is to start with a specific example and start creating a model. Many times I have tried to answer that same question, "which model to apply"? How do I know I'm not re-inventing the wheel?

[mkl]

> How do I know I'm not re-inventing the wheel?

You probably are, but for learning purposes that doesn't matter at all.

[pretendscholar]

If you successfully invent a new, improved, wheel then you don't need help or guides.