Johnson & Johnson is a nicely diversified company . Buying this is almost like a mutual fund in one stock without paying a management fee. Another good idea might be to actually buy a mutual fund from a company with low fees . They are diversified among stocks in a whole industry or better yet for a new investor in a larger range of industries as in an index fund which buys the entire market. This lowers your risk considerably compared to buying single stocks. T. Rowe Price, Vanguard and Fidelity are three examples and for most of their funds there is no up- front charge to open an account . Check them out on the internet and or ask them to send you written info.
ALWAYS buy a stock that has good values but then pick out something that will appeal to them. Something they use all the time and will recognize like a clothing company, a technology company, Apple, Facebook, EBay, etc. That way, they can earn some money and enjoy their use of the product knowing they are helping themselves in the process.
I would suggest penny stocks, just to get your feet wet, to learn how the market works. Investing is all about Risk, how much capital are you willing to risk. After a while you will start looking at companies and how they operate, to help determine a risk factor for investment. You will lose some money for a while, but don't worry about it, learn from it.