This is arguably the most important part of it all because most people don't buy shares to look at them. (There wouldn't actually be much to see, anyway.)
There are two main ways to make money from shares: growth and income.
Growth: This can be referred to as 'growth' or 'capital growth'. It's essentially the concept that the overall value of the business you own shares in goes up, meaning the value of your share goes up too. So, when you eventually sell it, you will be selling it for a higher price than you bought it for.
Income: The second way you can earn money from shares is via dividends. When a business makes profit, it can either decide to reinvest the profits back into growing the business or distribute some of the profits to the shareholders. These are called dividends. This dividend is your little portion of profit from the company that you partially own.
The ideal scenario would be for a share to increase in value (growth) and pay you a regular dividend (income).