Second, a frugal investor will demand this quality from managers. Buffett is leery of corporate waste. Excessive executive pay or silly perks are red flags. Buffett once quipped that companies stack pay committees with "sedated Chihuahuas."

Third, frugal people don't need fast returns to support extravagant lifestyles. This leaves them free to think more clearly about when to buy and sell stocks, making them much better investors, believes Stephen Shueh, a Buffett expert and managing partner of Roundview Capital in Princeton, N.J.

Lesson No. 2: Wait for the 'fat pitch'

Resist the itch to constantly buy or sell stocks.

"Lethargy bordering on sloth remains the cornerstone of our investment style," quipped Buffett in his 1990 annual report to Berkshire Hathaway (BRK.B, news, msgs) shareholders. Have the patience to wait a long time until some market turbulence brings the "fat pitch," as Buffett calls it, or stocks of great companies trading at really cheap valuations.

Lesson No. 3: Be a contrarian

A great way to make money is to go against the crowd. "We simply attempt to be fearful when others are greedy and to be greedy only when others are fearful," Buffett explained in a 1986 letter to shareholders.

• Video: Bet like Buffett on ETFs

So be skeptical of the conventional wisdom. Not because the crowd is always wrong but because the crowd's wisdom is probably already reflected in market prices, says Todd Lowenstein, a portfolio co-manager of the HighMark Value Momentum Fund (HMVMX).

When the investing public is extremely negative, it's usually a good time to buy stocks. When investors are confident, be careful.

Lesson No. 4: Stick with what you know

One of Buffett's basic rules is: If you don't understand a company's product or how it makes money, avoid it. He calls this "staying within your circle of confidence."

This isn't always easy. During the late 1990s boom, Buffett famously avoided tech companies, confessing that he could not understand what they did. He looked dumb until the bubble burst. "Ultimately, when it came full circle, he was proven right," Lowenstein says.

Lesson No. 5: Don't depend on others to say you're right

If you are in need of constant affirmation about your investment decisions, particularly from the stock market, you won't be able to invest like Buffett, points out Legg Mason (LM, news, msgs) money manager Robert Hagstrom in his book "The Warren Buffett Way."

That's because Buffett makes outsized returns by purchasing disliked value stocks that are so beaten down they're often virtually ignored by the talking heads. They won't be on TV every week telling you that you made the right choice.

Lesson No. 6: Buy companies cheap

This is the essence of being a value investor. The first step involves calculating what Buffett calls an "intrinsic value" for a business -- either by examining what similar companies sell for or calculating the present value of all the cash that will be generated by a company in the future. For more details on how to do this, you'll have to consult books such as "The Warren Buffett Way" or "The Market Gurus" by Validea's John Reese.

Next, build in a "margin of safety" by purchasing a stock well below its intrinsic value.

Buffett doesn't pay much attention to earnings per share, a common measure of value. Instead, he likes to see companies with good return on equity, solid operating margins and reasonable or no debt. He also likes to see that companies generate a lot of cash and that they invest it well or return it to shareholders in the form of dividends or buybacks.

The key throughout this analysis is to look back over five years or more. Buffett wants to see a consistent operating history; he's not into startup companies. He also prefers to gauge how well a company does in different kinds of markets, not just the good times or the latest quarter.

Lesson No. 7: Look for companies with economic moats

A key characteristic supporting consistent operating history is a sustainable competitive advantage. In other words, a company should have a barrier to entry -- or a kind of moat -- that keeps potential competitors at bay.

This could be a patent protection on drugs, high costs to get into a business or simple brand power, fund manager Lowenstein says. "Franchise" businesses like these can do well because they have the power to raise prices. In contrast, companies in "commodity" businesses have to take whatever price is set by a competitive market -- which can crush profits during hard times.

BNSF Railway is a great example of a "franchise" business. It's pretty hard for anyone to lay enough track in North America to start a competing railroad. Coca-Cola (KO, news, msgs), another long-term Buffett holding, has barriers to entry in the form of a strong global brand and distribution system that is hard to replicate.