Thank you for using the Jiskha Homework Help Forum. Here are some definitions for "stock:"
oooh ok but what stock is a good stock to choose from??
That depends upon what you want from the stock -- possibly big profits or dividends or a good chance of reliability.
I suggest you find Value Line at your library and choose stocks that are rated 1 or 2 for Timeliness and 1, 2, or 3 for safety. It also helps if you choose stocks of companies you know something about. Disney, for example, meets these criteria.