You might hear experienced investors talk about the concept of a "wide moat," especially if you're reading anything about Warren Buffett's investment style. Just as a wide moat around a castle makes it difficult for enemies to invade, a company should have a "wide moat," too: a sustainable competitive advantage that will prevent competitors from stealing that company's market share.

A stock split is when a company increases its total shares and is frequently done on a 2-for-1 ratio. So, if you own 100 shares of a stock priced at $80 per share and worth $8,000, after the split you'll have 200 shares priced at $40 each, and still worth $8,000. Stock splits occur when prices are rising in a way perceived to deter smaller investors. They can keep the trading volume up by making it easier for a larger buying pool to trade. If you invest in a stock, expect to experience a stock split at some point.

You’ll come across an overwhelming amount of information as you screen potential business partners. But it’s easier to home in on the right stuff when wearing a “business buyer” hat. You want to know how this company operates, its place in the overall industry, its competitors, its long-term prospects and whether it brings something new to the portfolio of businesses you already own.