1) You have to want to do it! Cameron mentions that at 9 years old he didn't want to be a professional athlete, he wanted to be a business man like Mr. Trump. You will generally get what you want bad enough.
2) You have to put yourself out there. This is the "catch part." You don't really have to be able to do anything well, you just have to be able to do it.
3) Start small and don't take on a lot of debt. Both of these teenagers essentially started inside of their homes for almost no money.
4) Do what you know.
5) Save and reinvest your money. Both of these millionaires are not into wasting their money. The two people most interested in spending money were the broke hosts of the show. That is a teling point, and a key difference between wealthy people and broke people.
If you follow these steps I'm sure you will be successful. Even if you aren't you'll have fun working on your new "'part-time money making hobby."