I don't know the different types other than 4 types which are: no interest and no collateral paying the seller only annually, interest on the back end with no collateral, compound interest with no collateral, or compound interest and collateral.

Now it's time to get to work and have compounding interest benefit me!

I like to think of Warren Buffett as a Value Compounder. 

With lots of focused hard work and compounded massive action, there is no reason one can't succeed in RE.  

Consider taking $200,000 earning 6% in the stock market and compound that in Excel over 35 years.

I think college is a big waste of time and money, they don't teach anything about the real world, like writing checks, paying bills, making sure you're out of debt, how to be rich by SIMPLY just compounding, and most importantly how to worry about taxes.

Time is the compounding factor in income. 5 years ago I bought a home to live in and turn into a rental and now the income is double the mortgage, income keeps increasing while costs remain relatively fixed.  

It is compounded by the home values being low (smaller depreciation) and the rents being high- and they tax on revenue not profit.

After that the interest keeps compounding.

The value of compounding capital of a 23 year old is pretty much infinite.