You invest money in a store or product
Let's say for example Chipotle
So (in small numbers)
Let's say you buy a piece of chipotle and you buy it for $50. Once you buy the piece that means you know own "stock" in chipotles business.
Maybe the next week chipotle is doing good and you'll make $200
But another week chipotle isn't doing so well and you make $25
By investing in chipotle you believe that chipotle will accumulate a lot of cash in the next years to come. So depending on what percent you bought you will receive money if chipotle does well. And you won't Recieve money if chipotle is not doing well.
Sorry this is so long but it takes a while to explain the stock market. That's the best I could do.
Also iPhones have a stock market app if your interested
