I finished "Rich Dad, Poor Dad"

Translation of "Rich Dad, Poor Dad" written by Robert T. Kiyosaki is best seller in Japan.

In this book, this writer said as follows.
There are an asset and a liability. Middle class people buy something as a liability. For example, people make a lot of loan for a car or house.
An asset make money for you. For example owning stocks or lands, these thing make money for you.

Of course, such assets sometimes lead failure. But don't be afraid.

I can't have enough courage to have stocks by only reading this book.
I should gather more information about assets.