Basically, a company sells stock to raise money. People buy stock that they think will either increase in price (so they can sell it at a profit), or will pay dividends (think of it as interest on money you are loaning the business, until you sell the stock).
If I or you know how then we all gonna be so really rich!!! But let me tell you something about this issue,when Theres A rumor about a company is gonna go high then people will buy some of it's stocks which will lead to that company a high green,and when there's a rumor about a company is gonna go down then people will sell and it WILL go down!!! Remember those rumors aren't always true because if people listen to the rumor it will be true. Stay on the safe side don't go for it,get a safe and decent job and everything will be ok :) Have a nice day :)