Peter Lynch, the Fidelity investing guru, once said:

“When stocks are attractive, you buy them. Sure, they can go lower—I’ve bought stocks at $12 that went to $2, but then they went to $30.”

With this in mind, never invest in a company without understanding its finances.

The biggest losses in stocks come from companies with poor balance sheets.

Always look at the balance sheet to see if a company is solvent before you risk your money on it.

Understand how a company makes its revenue and maintains its cash flow.