With regards to the money making rule:

Here's my contribution:

Making money is really quite straight forward.… simply give people want they want... this totally different from what they need. That's it. Once you understand that everything falls into place. If you get it then you are ready, grasshopper.

Now a little ramble on how our crazy mind works.
We all know how to make money from stocks and shares... buy low- sell high. Simple.
So...