Smart Investing For Beginners

This article is my bible of investment. I like his explanation of investing vs speculation, using S & P 500 Index as an example, 500 companies to individual stock.

Here is the link.

My favorite teaching graph is the following:

Understand what is market-risk.
What is speculating, not investing - using 500 companies as an example.

Total risk
market risk
specific-company risk

How to eliminate specific-company risk?
Can you dilute market-risk?

Why I worry about market-risk?