What is the best online tutorial to learn calculating DCF (Discounted Cash Flow )for a stock?

I'm 34 years old. Twelve years ago, I got a bachelor's degree in Computer Science, and have been working as a computer programmer more-or-less continuously since then. I also have …

I've read a couple of times: its price is above book value or its price is bellow book value. What is the book value? How do I find it? Is it objective?

This is a basic question but how do you make money when buying stocks?

I've heard that dividend-paying stocks typically outperform non-dividend paying stocks in the long run.

What affects the price of a stock? I know a lot of it has to do with how well the company is making profits but what else will make the price of a stock go up or down?

When a stock is already at a low price, you could say it can't go much lower and doesn't give you much incentive to short. What are other problems with shorting a stock that is alr …